These consolidated appeals arise from a long-standing tax dispute between the City of New York (“the City”) and certain foreign sovereigns who operate missions to the United Nations in the City. For years, the City has assessed property taxes against these missions, maintaining that while those parts of embassy buildings that are used for diplomatic offices are exempt from property taxation under international and state law, other parts of *175 the buildings — those that are used as residences for employees and their families — are not exempt. Appellants, the Permanent Mission of India to the United Nations (the “India Mission”) and the Principal Resident Representative of the Mongolian People’s Republic to the United Nations (the “Mongolia Mission”) — collectively “the Missions” — have resisted paying any property taxes to the City. They contend that their entire embassy buildings are tax exempt.
This dispute, and the litigation it engendered, ultimately prompted the United States Department of State (“Department of State” or “State Department”) to act. In June 2009, the State Department issued a notice pursuant to its authority under the Foreign Missions Act, 22 U.S.C. § 4301 et seq., establishing an exemption from real property taxes on property owned by foreign governments and used to house the staff of permanent missions to the United Nations or the Organization of American States or of consular posts. See Designation and Determination under the Foreign Missions Act (the “State Department Notice” or the “Notice”), 74 Fed. Reg. 31,788 (July 2, 2009). The Notice stated that this exemption would preempt inconsistent State and local laws and also that it would apply retroactively to taxes that had been previously assessed against the designated property. Id. We are now called upon to determine whether the action taken by the State Department was within its statutory authority. We conclude that it was. Specifically, we hold that the Foreign Missions Act (“FMA”) permits the State Department to designate affirmative benefits such as tax exemptions and that the Act allows the State Department to make- such tax exemptions preemptive of State and municipal tax laws. We also hold that, under the circumstances of this case, the State Department acted within its power in designating this benefit as effective retroactively. Finally, we conclude that the Notice issued by the State Department was procedurally proper because it falls within the “foreign affairs function” exception to notice and comment under the Administrative Procedure Act, 5 U.S.C. § 553(a)(1).
BACKGROUND
I.
The India Mission is housed in a twenty-six story building, located at 235 East 43rd Street, New York, N.Y., and owned by the government of the Republic of India. The first six floors of the building, as well as the basement and the cellar, are used for diplomatic offices. The remaining floors are dedicated to rent-free residential space for security personnel, a driver, and the diplomats of the Mission and of India’s consulate in New York (the offices of which are located elsewhere in the City). All of these employees rank below the head of the Mission, whose residence is not on site. The Mongolian Mission is housed in a multi-story building at 6 East 77th Street in New York City that is owned by the People’s Republic of Mongolia. The first two floors are used for the Mission’s offices. The third floor is used for the Ambassador’s apartment. The top two floors are used as rent-free apartments for other employees of the Mission.
The City has consistently taken the position that mission property used for the residences of lower-level employees is subject to taxation, and it has been levying taxes on such properties for years. Both the India Mission and the Mongolia Mission have argued that these residences are exempt from taxation under international and New York law because the residences are used for the purposes of the mission/consulate. They have therefore refused to pay any property taxes to the *176 City. By operation of New York law, the unpaid taxes converted into tax liens held by the City against the relevant properties.
II.
A.
In April 2003, the City filed separate complaints against several foreign missions in New York state court.
2
Pursuant to 28 U.S.C. § 1441(d), the Missions removed the cases to the United States District Court for the Southern District of New York. In its amended complaints, the City sought judgments for unpaid property taxes (and other unpaid charges) plus interest. The City also sought declaratory judgments to establish the validity of its tax liens against these missions. After limited jurisdictional discovery, the India Mission and the Mongolia Mission moved to dismiss, contending that, pursuant to the Foreign Sovereign Immunity Act (“FSIA”), 28 U.S.C. § 1604, the District Court lacked subject matter jurisdiction. The District Court denied the motion. It concluded that under the FSIA’s “immovable-property” exception- — -which provides that “[a] foreign state shall not be immune from jurisdiction ... in any case ... in which rights in ... immovable property situated in the United States are in issue,” 28 U.S.C. § 1605(a)(4) — the court had jurisdiction to adjudicate the validity of the City’s tax liens.
See City of N.Y. v. Permanent Mission of India to the U.N. (“Permanent Mission I”),
The Missions filed an interlocutory appeal that was limited exclusively to the jurisdictional issue. We affirmed the judgment of the District Court, holding that the immovable property exception to foreign sovereign immunity provided jurisdiction over the matter because what was in dispute was “the extent of defendants’ obligations under local law (here, property taxes) arising directly out of ownership of real property in the United States.”
See City of N.Y. v. Permanent Mission of India to the U.N.,
B.
The cases were then remanded to the District Court for proceedings on the merits. The parties cross-moved for summary judgment on the question of whether the parts of the properties used by India and Mongolia to house their staff were subject to real estate taxation. The District Court held that they were.
See City of N.Y. v. Permanent Mission of India to the U.N. (“Permanent Mission II”),
*177 The District Court first addressed the Missions’ claimed tax exemption under the applicable Vienna Conventions: a) Article 32 of the Vienna Convention on Consular Relations, (“VCCR”), Apr. 24, 1963, 21 U.S.T. 77, (ratified 1969), for the portions of the premises that house consular staff and b) Article 23 of the Vienna Convention on Diplomatic Relations (“VCDR”), Apr. 18, 1961, 23 U.S.T. 3227, (ratified 1972), for the portions of the premises that house the U.N. Missions. Under the VCCR,
[c]onsular premises and the residence of the career head of consular post of which the sending State or any person acting on its behalf is the owner or lessee shall be exempt from all national, regional or municipal dues and taxes whatsoever, other than such as represent payment for specific services rendered.
VCCR art. 32. “[Cjonsular premises” are defined in the VCCR as “the buildings or parts of buildings and the land ancillary thereto ... used exclusively for the purposes of the consular post.”
Id.
art. l(j). As the District Court explained, the VCDR “reaches the same result as the VCCR but through a slightly more circuitous route.”
Permanent Mission II,
the buildings or parts of buildings and the land ancillary thereto, irrespective of ownership, used for the purposes of the mission including the residence of the head of the mission.
VCDR art. l(i). Article 23, in turn, provides:
The sending State and the head of the mission shall be exempt from all national, regional or municipal dues and taxes in respect of the premises of the mission, whether owned or leased, other than such as represent payment for specific services rendered.
VCDR art. 23.
The District Court held that “the plain language of the VCCR and the VCDR unequivocally supports the City’s position” that the portions of the missions used to house employees and their families are not tax exempt.
Permanent Mission II,
The District Court then rejected the Missions’ remaining arguments, including their contention that disputed portions of the missions were exempt from taxation under customary international law.
4
See id.
*178
at 461-62. Accordingly, the District Court granted the City’s motion for summary judgment, thereby validating its tax hens and its assessment of taxes with interest against India and Mongolia.
See id.
at 470. The Court asked the parties to submit letters regarding the amounts due to the City. In a subsequent order, the District Court rejected all of the Missions’ objections to the City’s calculations, including their general objection that the interest rates imposed by the City were “exorbitant.”
See City of N.Y. v. Permanent Mission of India to the U.N. (“Permanent Mission III”),
III.
On June 23, 2009, while this appeal was pending, the Department of State issued a notice entitled Designation and Determination under the Foreign Missions Act, 74 Fed.Reg. 31,788. Invoking its authority under the FMA, the State Department “designate[d][an] exemption from real property taxes on property owned by foreign governments and used to house staff of permanent missions to the United Nations or the Organization of American States or of consular posts as a benefit for purposes of the Foreign Missions Act.” Id. (emphasis added). The Notice further explained that the exemption “shall be provided to such foreign missions on such terms and conditions as may be approved by the Office of Foreign Missions and that any state or local laws to the contrary are hereby preempted.” Id. (emphasis added).
The Notice stated that the action taken was “in accord with the tax treatment of foreign government-owned property in the United States used as residences for staff of bilateral diplomatic missions and conforms to the general practice abroad of exempting government-owned property used for bilateral or multilateral diplomatic and consular mission housing.” Id. (citation omitted). The State Department explained its action as follows:
This action is necessary to facilitate relations between the United States and foreign states, to protect the interests of the United States, to allow for a more cost effective approach to obtaining benefits for U.S. missions abroad, and to assist in resolving a dispute affecting U.S. interests and involving foreign governments which assert that international law requires the exemption from taxation of such diplomatic and consular properties. The dispute has become a major irritant in the United States’ bilateral relations and threatens to cost the United States hundreds of millions of dollars in reciprocal taxation. As the largest foreign-government property owner overseas, the United States benefits financially much more than other countries from an international practice exempting staff residences from real *179 property taxes, and it stands to lose the most if the practice is undermined. Responsive measures taken against the United States because of the dispute also have impeded significantly the State Department’s ability to implement urgent and eongressionally mandated security improvements to our Nation’s diplomatic and consular facilities abroad, imposing unacceptable risks to the personnel working in those facilities. This action will allow the United States to press forward with improvements that will protect those who represent the Nation’s interests abroad.
Id.
The State Department explicitly addressed the Notice’s intended retroactive effect, asserting that the
exemption from real property taxes provided by this designation and determination shall apply to taxes that have been or will be assessed against any foreign government with respect to property subject to this determination, and shall operate to nullify any existing tax liens with respect to such property, but shall not operate to require refund of any taxes previously paid by any foreign government regarding such property.
Id. (emphasis added). Finally, the State Department indicated that the actions taken in the Notice “are not exclusive and are independent of alternative legal grounds that support ... tax exemption.” Id.
We granted the Government’s motion to submit out of time an amicus brief formally apprising the Court of the Notice and discussing its legal implications. We then gave the parties an opportunity to respond, and allowed the Government to file a supplemental amicus brief to reply to the City’s arguments. 6
The two cases were argued together, and we have now consolidated them for disposition.
DISCUSSION
The State Department Notice squarely applies to the tax dispute at issue in this case. The Notice (1) provides that, as a benefit under the FMA., “property owned by foreign governments and used to house staff of permanent missions ... or of consular posts” is exempt from real property taxation; (2) states that “any state or local laws to the contrary,” such as those of New York City, are preempted; and (3) expressly states that the tax exemption is to apply retroactively to taxes that have previously been assessed and “shall operate to nullify any existing tax liens” with respect to the affected property. 74 Fed. Reg. 31,788 (emphasis added). Therefore, if the State Department’s issuance of the Notice was procedurally proper, and if the actions taken in the Notice are within the Secretary’s lawful authority under the FMA, then the Notice is dispositive of this case and requires that we find in favor of the Missions irrespective of whether the Missions are also entitled to immunity from taxation under either international or state law.
After outlining the relevant provisions of the FMA, we address the issue of whether the Notice establishing the tax exemption as a “benefit” is lawful as applied prospectively. We then consider whether it was within the State Department’s authority to designate such a benefit to be effective retroactively. Finally, we address whether the Notice was procedurally proper, *180 given that it was promulgated without notice and comment.
I.
The FMA was enacted in 1982 to “support the secure and efficient operation of United States missions abroad, to facilitate the secure and efficient operation in the United States of foreign missions ..., and to assist in obtaining appropriate benefits, privileges, and immunities for those missions and organizations and to require their observance of corresponding obligations in accordance with international law.” 22 U.S.C. § 4301(b). The Act’s legislative history indicates that Congress was troubled by the fact that “an increasing number of countries” denied United States missions suitable locations or long-term rights to property or facilities, resulting in increased costs and diminished security and effectiveness.
See
S.Rep. No. 97-283, at 2 (1981). The Act was designed to address this “serious and growing imbalance between the treatment accorded in many countries to official missions of the United States [ ] and that made available to foreign government missions in the United States.”
Id.
at 1. Congress sought to accomplish this by creating “a statutory scheme that vests broad discretion in the Secretary of State to exercise authority over foreign missions in light of [relevant] foreign policy considerations and concerns.”
Republic of Benin v. Mezei,
The term “benefit” — whose meaning is central to the State Department’s Notice and the City’s challenge to it — is defined under section 4302(a) to mean:
any acquisition, or authorization for an acquisition, in the United States by or for a foreign mission, including the acquisition of — (A) real property ..., (B) public services ..., (C) supplies, maintenance, and transportation, (D) locally engaged staff ..., (E) travel and related services, (F) protective services, and (G) financial and currency exchange services, and includes such other benefits as the Secretary may designate.
§ 4302(a)(1) (emphasis added). Section 4302(b) directs that determinations “with respect to the meaning and applicability” of terms listed in section 4302(a) — -including “benefit” — are “committed to the discretion of the Secretary.” The legislative history indicates that this provision was included to “avoid conflicting interpretations by different government agencies and courts and potential litigation that might detract from the efficient implementation of [the FMA] or might adversely affect the management of foreign affairs.” S.Rep. No. 97-283, at 7 (1981).
Section 4303 specifies the functions to be carried out by the Secretary. They include, inter alia, “[a]ssist[ing] agencies of Federal, State, and municipal government with regard to ascertaining and according benefits, privileges, and immunities to which a foreign mission may be entitled,” 7 and “[p]rovid[ing] or assisting] in the provision of benefits for or on behalf of a foreign mission in accordance with section 4304 of [the Act].” 22 U.S.C. § 4303(l)-(2). *181 Section 4304 governs the “[provision of benefits.” Pursuant to it, the Secretary may provide benefits, subject to any terms and conditions that she specifies, either “[u]pon the request of a foreign mission,” § 4304(a), or when the Secretary “determines that such action is reasonably necessary on the basis of reciprocity or otherwise” to help meet certain foreign policy goals including:
(1) to facilitate relations between the United States and a sending State, (2) to protect the interests of the United States, (3) to adjust for costs and procedures of obtaining benefits for missions of the United States abroad, (4) to assist in resolving a dispute affecting United States interests and involving a foreign mission or sending State, or (5) ... to implement an exchange of property between the Government of the United States and the government of a foreign country....
Id. at § 4304(b)(1) — (5). If the Secretary determines that action is necessary, then she “may require a foreign mission (A) to obtain benefits from or through the Secretary on such terms and conditions as the Secretary may approve, or (B) to forego the acceptance, use, or relation of any benefit or to comply with such terms and conditions as the Secretary may determine .... ” Id. at § 4304(b).
The FMA includes a section that addresses preemption. That section provides in full:
Notwithstanding any other law, no act of any Federal agency shall be effective to confer or deny any benefit with respect to any foreign mission contrary to this chapter. Nothing in section 4302; 4303, 4304, or 4305[addressing the property of foreign missions] of this title may be construed to preempt any State or municipal law or governmental authority regarding zoning, land use, health, safety, or welfare, except that a denial by the Secretary involving a benefit for a foreign mission within the jurisdiction of a particular State or local government shall be controlling.
Id. at § 4307 (emphasis added).
Section 4308 sets forth general provisions for the regulation of foreign missions. Relevant among them, section 4308(a) provides the Secretary with the authority to issue regulations to carry out the policy of the FMA, and section 4308(g) establishes that “[e]xcept as otherwise provided, any determination required under [the FMA] shall be committed to the discretion of the Secretary.”
II.
A.
When Congress expressly confers to an agency interpretive authority over a statute that the agency is administering, our review of the agency’s interpretation is limited and deferential.
See United States v. Mead Corp.,
Limited review does not, however, mean no review. Though the FMA vests interpretive discretion in the Secretary over certain terms like “benefit,” it remains incumbent upon us as a court to determine whether the Notice exceeds the State Department’s statutory authority.
See Schweiker v. Gray Panthers,
B.
The first question we must answer, therefore, is whether the FMA authorizes the State Department to designate property tax exemptions for mission and consular staff residences as “benefits.” The Government, whose position Appellants adopt, argues that the Notice falls within the expansive authority granted in the FMA to the State Department. The City argues that it does not, and contends that exemptions from generally applicable local laws, including tax laws, are not within the permissible scope of the statutory term “benefit.” The City maintains that “benefit” is used in a technical, narrow, and somewhat counter-intuitive sense in the FMA. According to the City, the FMA authorizes the State Department to designate goods and services as benefits only for the purpose of imposing reciprocal restrictions, and not for the purpose of “awarding] favors to foreign missions by relieving them of their local law obligations.” Appellee Resp. Br. to Amicus Curiae 20. On this view, benefits are limited to acquisitions of existing real property, and other goods, and services that are readily available to the general public. The City argues that when the State Department designates such items as “benefits” for a foreign mission, the action serves as a potential sanction because the designation gives the State Department authority, under section 4304, to impose restrictions on otherwise freely-available items as a way to reciprocate for restrictions imposed on United States missions abroad. The City bases its argument on the text and structure of the FMA, as well as on the asserted broader purpose of the legislation, which according to the City is embodied both in the statute’s legislative history and in the manner in which it has subsequently been implemented by the State Department.
1.
We begin our interpretation of a federal statute with the statutory text.
See United States v. Hasan,
We agree that the broad and open-ended language of the second part of this definition empowers the State Department to grant positive benefits, such as property tax exemptions. Nothing in 22 U.S.C. § 4302(a)(1) limits the category of “other benefits” in the second part of the definition to the enumerated list of “acquisition[s]” in the first-part. To the contrary, the illustrations used in the definition are explicitly non-exclusive, and the second part of the definition is best read as authorizing the State Department to designate additional benefits that are consistent with the FMA’s general purposes. Such a delegation is unexceptional in a statute that confers discretionary authority to an executive department to manage foreign affairs.
See Zemel v. Rusk,
In an attempt to resist this understanding of “benefit,” the City invokes the principle of
ejusdem generis. Ejusdem generis
is a textual canon of statutory interpretation that instructs courts to interpret a general term in a statute that follows a list of more specific terms “to embrace only objects of the same kind or class as the specific ones.”
United States v. Amato,
We find the City’s textual argument unconvincing. The principle of
ejusdem generis
is “no more than an aid to construction” that “comes into play only when there is some uncertainty as to the meaning of a particular clause in a statute.”
See United States v. Turkette,
Moreover, and even apart from considerations of deference, we doubt that
ejusdem generis
is relevant to this particular statutory provision. As we previously explained, we read the “other benefits” part of the definition for “benefits” as structurally separate from the enumeration in § 4302(a)(A)-(G). It follows that we do not regard “other benefits” as a general term that necessarily embraces the same object as the specific benefits identified; the second part of the definition is a delegation, not merely a “catch-all.”
See Turkette,
2.
We next consider the City’s argument that the FMA’s purpose and history indicate that Congress intended to establish a limited and technical meaning of “benefit” that the Notice in this case contravened.
A review of the legislative history of the FMA suggests that the City correctly characterizes the primary mischief that Congress intended to address in the statute: the imposition of restrictions and burdens on U.S. missions overseas and the State Department’s inability to respond with targeted and proportionate measures. Congress documented several examples of what it considered unfair treatment by foreign -governments that impaired the ability of U.S. missions to purchase property abroad and to obtain facilities and services. 8 Congress also recognized that, at the time, the State Department did not have the legal tools to respond to such treatment because it “lack[ed] authority to impose similar restrictions or conditions on ... other countries in the United States” and was instead forced, if it was to act all, to “take far more extreme action such as barring the country from using property ... or declaring some persons persona non grata.” S.Rep. No. 97-283, at 3 (1981). These extreme remedies were not generally “suitable,” Congress explained, and so they were “rarely used.” Id. By contrast, the FMA provided “mechanisms whereby the operations of foreign missions in the United States and the benefits available to them from Federal, State and local authorities, public utilities, and private persons may be cleared through the Federal Government and adjusted according to United States needs” so that “the conditions under which foreign missions operate in the United States can be made to reflect the conditions under which missions of the *186 United States are required to operate in the countries represented by such foreign missions.” Id. at 1-2. In other words, the FMA allowed the State Department “to make the punishment fit the crime.” H.R Rep. No. 97-102, Pt. 1, at 27 (1981) (internal quotation marks omitted).
We reject, however, the City’s invitation to treat evidence that Congress passed the FMA in part to create a reciprocal-sanctions regime as proof that Congress intended to limit the State Department’s authority to designate benefits to this function only. First, we find no evidence that Congress sought to proscribe the State Department from using benefits as “carrots” rather than as “sticks” in instances where the State Department believed that doing so would best advance the national interest and improve treatment for United States missions abroad. The State Department made just such a judgment in this case. The Notice a) describes how the tax treatment foreign missions have received in the United States has led to adverse “[rjesponsive measures taken against the United States” and b) explains why, if the United States were to pursue reciprocal retaliation rather than confer a positive benefit, it would likely leave the United States worse off.
See
74 Fed.Reg. 31,788 (“As the largest foreign-government property owner overseas, the United States benefits financially much more than other countries from an-international practice exempting staff residences from real property taxes, and it stands to lose the most if the practice is undermined.”). Of course, just because a certain diplomatic tool is desirable does not mean that Congress has authorized it. But in the context of a statute in which Congress has “expressed a clear intention that the executive branch’s authority ... be broad,”
Palestine Info. Office,
Second, the legislative history suggests that in addition to providing the State Department with new authority to respond to the treatment of United States missions abroad, the FMA also had the purpose of giving the State Department the ability “to assist foreign missions, at their request, to obtain benefits” in order to “enhance the ability of foreign missions to conduct their representational duties in the United States.” S.Rep. No. 97-283, at 8 (1981); accord H.R.Rep. No. 97-102, Part 1, at 31 (1981). This additional purpose, which is reflected in statute’s statement of policy in section 4301(b), clearly contemplates the granting of affirmative benefits by the State Department.
Apart from the legislative history, the City also seeks to rely on the FMA’s post-enactment regulatory history as providing support for its interpretation. The City contends that while the State Department has previously used the FMA. to impose restrictions on specific foreign missions by placing conditions on their acquisition of property, goods or services, the Department has not historically attempted to use its authority under domestic law to grant legal exemptions. The fact that the FMA can be used (and indeed has been used) to impose reciprocal sanctions does not, however, limit the State Department’s authority to designate benefits in other ways that are also consistent with the statute. And in the context of a statute that was designed to facilitate flexibility, we do not believe that the supposed novelty of this benefit designation makes such a designation suspect. 9
*187 We therefore conclude that the FMA empowers the State Department to grant positive benefits, as well as to place restrictions on existing benefits.
C.
That the State Department is authorized to confer tax exemptions as “benefits” to foreign missions does not necessarily mean, however, that such benefits preempt State and local tax laws. Accordingly, we turn now to the question of the preemptive effect of the State Department Notice. A federal agency “may preempt state regulation and hence render unenforceable state or local laws that are otherwise not inconsistent with federal law” provided the agency is “acting within the scope of its congressionally delegated authority.”
City of N.Y. v. FCC,
The answer to the first question is not in doubt: The State Department expressly addressed the preemptive effect of the Notice, and provided that “any state or local laws to the contrary [of the Notice’s benefit designation] are hereby preempted.” 74 Fed.Reg. 31,788. And even aside from that explicit assertion, it is clear that the City’s property taxes cannot coexist with the State Department’s Notice, and so, if the latter is valid, it must prevail.
See Blum v. Bacon,
We also answer the second question in the affirmative. The State Department acted within its statutory authority in recognizing a property tax exemption as a benefit that has the effect of preempting the City’s inconsistent tax laws. In reaching this conclusion, we reject the City’s contention that section 4307 — which provides that nothing in the FMA “may be construed to preempt any State or municipal law or governmental authority regard *188 ing zoning, land use, health, safety, or welfare, except that a denial by the Secre tary involving a benefit for a foreign mission within the jurisdiction of a particular State or local government shall be controlling,” 22 U.S.C. § 4307 — precludes the State Department from granting a benefit that affirmatively displaces State or local tax laws. The problem with the City’s argument is apparent from the text of section 4307 emphasized above. Section 4307 does not bar the State Department from providing benefits that contravene all local laws. Rather, by its terms it specifically shields only those State or local laws “regarding zoning, land use, health, safety, or welfare. ” The section is tellingly silent with regard to State and local tax laws.
Attempting to resist this textual implication, the City argues that the section implicitly forbids any preemption that it does not explicitly authorize. That is, according to the City, the provision allows the State Department to exercise “negative preemption”
10
by issuing “controlling” denials of benefits that trump contrary zoning, land use, health, safety, or welfare laws that would normally make such benefits available, 22 U.S.C. § 4307, but it does not otherwise allow the State Department to displace State or local law. The City’s argument for this interpretation relies primarily on its view of the legislative history of section 4307, as well as on background norms of interpretation that establish a presumption against preemption when Congress authorizes regulatory action in an area that the States have traditionally occupied,
see Altria Group, Inc. v. Good,
— U.S. -,
With respect to the presumption against preemption, we can readily assume the existence of such a presumption. But we do not believe it affects the issues disputed in this case. As the Supreme Court has explained, the presumption against preemption is relevant to assessing “whether a given state authority conflicts with, and thus has been displaced by, the existence of Federal Government authority.”
New York v. FERC,
The language, structure, and subject-matter of the FMA all strongly indicate that Congress meant to give the State Department authority to designate benefits that might conflict with and therefore preempt State and local law.
See La. Pub. Serv. Comm’n,
The “plenitude of Executive authority,” given to the Secretary of State to regulate foreign missions under the FMA controls the question of whether the State Department acted permissibly in designating a tax exemption benefit that preempted inconsistent State and local tax law.
See Crosby v. Nat’l Foreign Trade Council,
But, understood in context, section 4307 supports, rather than detracts from, our conclusion that the State Department acted within the scope of its statutory authority. That section demonstrates that Congress recognized that the State Department might wish to designate benefits that contravened State or local law, and that Congress chose to limit the State Department’s authority over some of these laws, namely State or local
police powers,
to negative preemption only. The City’s argument to the contrary notwithstanding, section 4307 cannot in its natural meaning be read as describing the FMA’s full-preemptive scope, but rather as a savings cause that insulates certain listed State and municipal powers from preemption. As such, section 4307 provides additional
*190
support for the conclusion that the State Department has the power to preempt any and all State and local laws that are not specifically protected.
See Drake,
The legislative history of section 4307 of the FMA, which the City recounts at length, if anything gives further backing to this interpretation. While the legislative history confirms that Congress was concerned about preemption under the FMA and attempted to balance carefully the diplomatic interests of the federal government against the interests of State and local governments, it in no ways suggests that Congress intended for section 4307 to impose limits on the State Department’s ability to designate tax exemptions with preemptive effect.
The original Senate and House bills contained a different preemption provision from the one that was ultimately enacted into law as section 4307. It read:
Notwithstanding any other provision of law, no act ... of any State or municipal government authority shall be effective to confer or deny any benefits with respect to any foreign mission contrary to this title.
S. 854, 97th Cong. § 207, reproduced, in S.Rep. No. 97-329, at 32 (1981); H.R. 3518, 97th Cong. § 207, reproduced in H.R.Rep. No. 97-102, Pt. 1, at 62 (1981). According to the reports of both the House and Senate Committees on Foreign Affairs, this provision “declare[d] the preemptive effect of the exercise of Federal jurisdiction with regard to the conferring or denying of benefits (including the location or use of real property) which are regulated by this title.” S.Rep. No. 97-283, at 15 (1981); H.R.Rep. No. 97-102, Part 1, at 36 (1981). The breadth of this preemption provision drew opposition, much of which was directed at the possibility that the FMA might conflict with local zoning laws and with home rule for the District of Columbia (which was implicated by section 206 — codified at 22 U.S.C. § 4306 — addressing the location of foreign missions in Washington D.C., as well as by the more general provisions regarding benefits).
The State Department tried to address these concerns. The Assistant Secretary of State for Administration sent a letter to the Senate discussing the preemptive scope of section 207 and what effect it would have on “state or municipal land use processes, in connection with regulation of the location and size of the foreign missions.” See Letter from Thomas M. Tracy, Assistant Sec’y of State for Admin., to William V. Roth, Chairman, Governmental Affairs Comm., U.S. Senate (Mar. 4, 1982), reproduced in S.Rep. No. 97-329, at 5 (1981). The letter explained that such state and local authorities were “not affected, with the exception that the Secretary ... may disqualify a foreign government from obtaining or retaining official facilities in any location in the United States.” Id. The Governmental Affairs Committee Report acknowledged that some members were concerned because Mr. Tracy’s interpretation — which the Committee understood to describe a “ ‘negative veto’ ” — was not then reflected in the text of the bill, but the majority of the committee ultimately shared Mr. Tracy’s view that the statute did not interfere with or preempt local zoning and regulatory policies. See S.Rep. No. 97-329, at 16-17 (1981). On the issue of Washington D.C. home rule, the Committee acknowledged that section 206 did allow for the preemption and alteration of zoning and land use regulations, but concluded that in other respects “District of Columbia laws and ordinances, including tax and penal codes, [could not] be *191 preempted by th[e] legislation.” Id. at 17 (emphasis added).
Some in the Committee were not mollified. Five senators recorded their “minority views” and “object[ed] to the broad federal preemption language of sec. 207 of the bill.” Id. at 42 (minority views). They believed that “the effect of this provision would be to override not only [laws in the] District of Columbia, but also other municipalities’ and states’ laws concerning such things as zoning for consulates; building ... codes ...; tax codes; police powers and penal codes.” Id. (emphasis added). The senators feared that if the Secretary, in her discretion, determined to “confer or deny any of the kinds of ‘benefits’ ” under the FMA, those benefits would be conferred or denied “regardless of the requirements of local or state law.” Id. The senators argued that such a “sweeping preemption of federal, state, and local law” was not necessary to accomplish diplomatic reciprocity and was not required by the terms or intent of the VCDR. Id. They also rejected the Assistant Secretary’s assurance “that a negative preemption was all that was intended” because they concluded that section 207 was “not so narrowly drawn.” Id. at 43. The senators reported that these concerns about state and local autonomy were shared by “the National League of Cities, the U.S. Conference of Mayors, and several State Attorneys General.” Id. 11
In the end, section 207 was amended at conference to its present form. Under it, the reference to State or municipal laws being preempted was altered so that, as to “any State or municipal law or governmental authority regarding zoning, land use, health, safety, or welfare,” only negative preemption was permitted. 22 U.S.C. § 4307.
We recognize that the minority views of the Report for the Senate Governmental Affairs Committee demonstrate that there were some members of Congress who did not wish to give the State Department the authority to do what it has done in the Notice: override State and municipal tax laws. See S.Rep. No. 97-329, at 42 (1981) (minority views). It is also possible to read the majority report of that Committee as reflecting a view that — before the statutory language was altered — the FMA did not actually provide the State Department with this power. See id. at 17. But when section 4307 was changed to its present form, the modified provision stated that preemption of areas like zoning and land use was limited to the exercise of a negative veto, and significantly said nothing whatever about tax laws. This silence is conspicuous. Where the record indicates that there were concerns within Congress that the FMA would empower the State Department to preempt affirmatively a variety of State and local laws including tax laws, we cannot read a statutory modification that limited the State Department’s ability to preempt affirmatively some of those laws — not including tax laws — as implicitly barring affirmative preemption of other local laws, and specifically tax laws. 12
*192 III.
Having concluded that the State Department’s decision to create an exemption from all property taxes (including State and local taxes) for property owned by foreign governments and used to house staff of permanent missions and consular officers was within the Department’s authority under the FMA, we now consider whether the Notice also invalidates taxes previously assessed by the City and nullifies the City’s tax liens. Once again, our inquiry involves two questions: (1) Does the language of the Notice require that it be given retroactive effect? And if so, (2) has Congress provided the State Department with statutory authority to exempt missions from taxation retroactively?
See Bowen v. Georgetown Univ. Hosp.,
The language of the Notice clearly resolves the first question. The Notice states: “The exemption from real property taxes provided by this designation and determination shall apply to taxes that
have been
or will be assessed against any foreign government with respect to property subject to this determination, and shall operate to nullify any existing tax liens with respect to such property....” 74 Fed. Reg. 31,788 (emphasis added).
13
And there can be no doubt that what the State Department has done is to create a retroactive rule because it “attaches a new disability” to prior tax assessments made by the City in the form of invalidation through federal preemption.
See Landgraf v. USI Film Prods.,
We therefore turn to whether the State Department had the statutory authority to confer such a retroactive property tax exemption.
A.
“Retroactivity is not favored in the law.”
Sweet v. Sheahan,
The Government argues that the presumption against retroactivity is not relevant to this case because the Notice involves Executive action in the foreign affairs context and because it implicates only public, rather than private, rights. For this proposition, it relies by analogy on
Republic of Austria v. Altmann,
To the extent the Government contends that the presumption against retroactivity is always inapplicable to cases involving public rights in the foreign affairs context, it over-reads
Altmann.
The Government highlights the statement in
Altmann
that though the antiretroactivity presumption is “not strictly confined to cases involving private rights, it is most helpful in that context.”
The Government also has no support for the suggestion that the presumption is inapplicable because foreign affairs are implicated. Though, in Altmann, the issue of sovereign immunity obviously arose in the foreign affairs context, this was not the basis for the Court’s holding in that case. Instead, the Altmann decision relied on the nature of sovereign immunity laws, which are quasi-jurisdietional in nature and are not designed to encourage primary conduct on the part of the immune sovereign or to provide a basis for reliance interests. See id. (“[T]he principal purpose of foreign sovereign immunity has never been to permit foreign states and their instrumentalities to shape them conduct in reliance on the promise of future immunity from suit in United States courts. Rather, such immunity reflects current political realities and relationships, and aims to give foreign states and their instrumentalities some present protection from the inconvenience of suit as a gesture of comity.” (emphasis and internal quotation marks omitted)). 15
Nevertheless, we do find
Altmann
instructive. It reminds us that “the antiretroactivity presumption is just that — a presumption, rather than a constitutional
*195
command.”
16
Retroactive laws are not always pernicious. They may “serve entirely benign and legitimate purposes,” such as responding to emergencies, correcting mistakes, preventing attempts to undermine the transition to new legal rules, or simply giving comprehensive effect to a desirable policy change.
Landgraf,
In view of the values the presumption against retroactivity is designed to serve, it is not surprising that it has most frequently been applied in cases involving contractual or property rights, where “predictability and stability are of prime importance,”
id.
at 271 & n. 25,
First, the State Department Notice implicates only the public rights of States and municipalities, not of private persons. We have explained that under our case law, this fact is not independently sufficient to negate the antiretroactivity presumption.
See Yale-New Haven Hosp.,
Second, and most important, the Notice does not upset expectations that were genuinely settled. It is true that this suit, which was brought to establish the validity of the City’s tax liens, involves “rights in ... property,”
see Permanent Mission of India to the United Nations,
As described earlier, the VCDR exempts from taxation “the premises of the mission,” VCDR art. 23, 23 U.S.T. 3227, which are defined as “the buildings or parts of buildings ... used for the purposes of the mission, including the residence of the head of the mission,”
id.
art. l(i). Similarly, the VCCR establishes a tax exemption for “[cjonsular premises and the residence of the career head of consular post.” VCCR, art. 32, 21 U.S.T. 77. The District Court held that because the VCCR and the VCDR specifically recognize a tax exemption for the residences of the “career head of consular post” and “the head of the mission,” the treaties implicitly exclude tax exemptions for any other residences.
See Permanent Mission II,
*197 We agree that under the treaties, the only residences that are categorically exempt from taxation are those belonging to the head of mission and the head of the consular post respectively. And, indeed, the Missions do not argue that staff residences are always exempt from taxation. Rather they contend that such residences are exempt to the extent they are part of the “consular premises” and “the premises of the mission” that are tax exempt. Moreover, they concede that not all staff residences would fit this description. But they argue that a residence is part of a “consular premises,” if it is “used exclusively for the purposes of the consular post,” VCCR art. l(j), and similarly that a residence is part of the “premises of the mission” if it is part of the buildings “used for the purposes of the mission,” VCDR art. l(i).
Under this interpretation of the treaties, it would essentially become a mixed question of law and fact whether India and Mongolia are using staff residences for the purposes of the mission or exclusively for the purposes of the consular post. In the instant case, the Missions insist that the residences serve significant mission and consular functions because they are located in a single facility that also houses diplomatic offices. This arrangement, the Missions argue, enables staff to be on hand to work at odd hours as required by the time difference between New York City and their home countries, facilitates cost-effective security, and allows staff to participate in cultural events.
We do not today hold the Missions’ interpretation of the VCCR and the VCDR to be correct; there are significant arguments that go in the other direction. We disagree, though with the District Court’s conclusion that the “plain language of the VCCR and the VCDR unequivocally supports the City’s position.”
Permanent Mission II,
The City denies that, in the past, there was ever any uncertainty about whether embassy properties used to house staff would be subject to taxation. It points to guidance documents published by the State Department prior to the 2009 Notice, which stated that “[a]bsent a bilateral agreement, property tax exemption is not generally granted to residences owned by foreign governments used to house members of consular posts or international organizations, except ... for career heads of the consular posts or chiefs of missions to the international organizations.” See U.S. Dep’t of State, Foreign Diplomatic and Consular Personnel in the United States: Guidance for Administrative Officers (the “Guidance ”) § 7.8 (2007), available at http://www.state.gov/documents/ organization/126637.pdf. More directly on point, the City notes that the State Department made similar statements regarding staff residences for permanent missions to the United Nations in New York City, and even made such statements to the India Mission with respect to the building at issue in this case. 19
The City also dismisses the significance of the
County of Arlington
decision. Beyond arguing that the decision is “unpersuasive” — a view shared by the District Court in this case,
see Permanent Mission II,
We do not deny that the City had a good-faith belief that it would be able to impose property taxes on the staff residences for the Missions. But that does not alter the fact that the right to impose taxes was anything but settled prior to the Notice. The governing language of the VCDR and VCCR is ambiguous; the leading federal appellate court decision rejected the City’s interpretation of these treaties and recognized a tax exemption for an apartment building located in Arlington, Virginia that housed the staff of a foreign mission to the United States; the State Department issued a public notice subsequent to that decision affirming its position that, at least with respect to bilateral missions, “property owned by diplomatic missions used to house the staff of such missions is exempt from general property tax, subject to reciprocal treatment of comparable property owned by the United States abroad,” Public Notice 975: Property Owned by Diplomatic Missions and Used to House the Staff of Those Missions is Exempt From General Property Taxes, 51 Fed.Reg. 27,303,' 27,304 (July 30, 1986); 20 and while the City points to several statements issued by the State Department that suggest staff residences for missions to the United Nations and consular offices were considered taxable, none of these statements either a) explain why the Department considered these properties taxable even though analogous properties held by bilateral missions to the United States were not, or b) address whether residential housing located on the same premises as diplomatic offices might serve the purposes of a mission or consular office. 21
*200 For these reasons, we find that the presumption against retroactivity is not determinative in this case. We emphasize that our holding on this issue is narrow. We do not adopt the Government’s contention that the antiretroactivity presumption is generally inapplicable to foreign affairs cases involving public rights. Rather, we conclude that in the circumstances of this case, application of the, antiretroactivity clear statement rule is misplaced because the values that underlie that rule are not sufficiently implicated.
B.
While the FMA does not contain the sort of
express
authorization for the State Department to issue a rule that operates retroactively that overcoming full application of the antiretroactivity presumption would require,
see Rock of Ages Corp.,
The FMA directs the State Department “to support the secure and efficient operation of United States missions abroad” and to do likewise for foreign missions located in the United States. 22 U.S.C. § 4301(b). Achieving this goal may require the mediation of conflicts between the United States and foreign countries, a prospect that the FMA explicitly contemplates in setting forth criteria for the provision of benefits. See 22 U.S.C. § 4304(b)(4) (directing the Secretary to provide benefits and set terms and conditions on their enjoyment if such action is “reasonably necessary ... to assist in resolving a dispute affecting United States interests and involving a foreign mission or sending State”). We think it would be anomalous to read the FMA as requiring the State Department to resolve disputes involving foreign missions through the designation of benefits, and yet to tie the Department’s hands by limiting it to prospective solutions that may not address the sources of the conflicts.
In the instant case, for instance, the State Department asserted that action on its part was needed to “resolv[e] a dispute affecting U.S. interests and involving foreign governments which assert that international law requires the exemption from taxation of such diplomatic and consular properties.” 74 Fed.Reg. 31,788. It seems unlikely that this disagreement— which the State Department tells us has “become a major irritant in the United States’ bilateral relations and threatens to cost the United States hundreds of millions of dollars,” id. — could be effectively resolved by the establishment of an exemption that was only forward-looking and that left the Missions on the hook for decades of property taxes along with significant back interest payments. Accordingly, we cannot read the FMA, which was intended to give the State Department flexible tools to carry out United States foreign-policy objectives, as so restricted.
IV.
In addition to objecting to the substance of the State Department Notice, the City also challenges the procedure by which the Notice was promulgated. Specifically, the City contends that the State *201 Department issued the Notice without allowing first for notice and comment, and that doing so was improper. We disagree, and conclude that though the Notice is a final rule with the force of law, it is exempt from the procedural requirements of the Administrative Procedure Act (“APA”), 5 U.S.C. § 553, because the Notice “involved ... a ... foreign affairs function of the United States,” id. § 553(a)(1).
The APA provides that federal courts “shall ... hold unlawful and set aside agency action, findings, and conclusions found to be ... without observance of procedure required by law....” 5 U.S.C. § 706(2)(D). Section 553 of the APA generally requires notice of a proposed rule-making in the Federal Register and an opportunity for interested persons to comment.
Id.
§ 553. The Section, however, exempts from its coverage “regulations involving ‘a military or foreign affairs function of the United States.’ ”
Rajah v. Mukasey,
We have stated that “exceptions to [section] 553 should be narrowly construed and only reluctantly countenanced.”
Zhang v. Slattery,
The City tries to resist this conclusion by reading restrictive conditions into our prior cases dealing with the foreign affairs exception. The City argues that the exception governs only if one of two circumstances is met: either if the rulemaking does “no more than implement” a formal international agreement,
see Int’l Bhd. of Teamsters v. Peña,
But the City takes language from our prior cases out of context. The cases upon
*202
which the City relies addressed a quite different question than what is at issue here: the extent to which the foreign affairs exception should apply to immigration rules. The dangers of an expansive reading of the foreign affairs exception in that context are manifest. While “immigration matters typically implicate foreign affairs” at least to some extent,
Yassini v. Crosland,
By contrast, the action taken by the State Department to regulate the treatment of foreign missions implicates matters of diplomacy directly. Recognizing the applicability of the foreign affairs exceptions in this context does not raise the same concerns of loose interpretation, see id., and hence the value of analogies between the instant case and immigration cases is correspondingly low. Though the foreign affairs exception extends beyond diplomacy, diplomatic functions, such as those here involved, represent the exception’s paradigm case.
In short, while a case-by-case determination that public rule making would provoke “definitely undesirable international consequences,” may well be necessary before the foreign affairs exception is applied to areas of law like immigration that only indirectly implicate international relations, quintessential foreign affairs functions such as diplomatic relations and the regulation of foreign missions are different. Such actions “ ‘clearly and directly’ involve a ‘foreign affairs function,’ ”
see Mast Indus., Inc. v. Regan,
One final argument by the City against our application of the foreign affairs exception to the Notice, however, merits discussion. The City contends that the legislative history of the FMA demonstrates that Congress did not want an exemption from notice and comment to apply to actions taken by the Department of State under this particular statute. The bills passed by both the Senate and the House of Representatives originally contained an exemption from APA rule making under section 553 for actions taken by the State Department under the FMA (except for actions taken under a section of the FMA. addressing the location of foreign missions in the District of Columbia). See S. 854 § 208(g), reproduced in S.Rep. No. 97-283, *203 at 30 (1981) (codified as enacted at 22 U.S.C. § 4308(g)) (“Except as provided in ... 206(b), actions taken under the authority of this title shall not be considered rulemaking within the meaning of section 553....”); H.R Rep. No. 97-102, pt. 1, at 40 (1981) (describing the same provision). As explained by the Report of the Senate Governmental Affairs Committee, this exemption was included because most of the actions under the FMA were “political in nature, involving considerations of foreign policy and national security.” S.Rep. No. 97-329, at 18-19 (1981). The provision was not unanimously endorsed, however. The “minority views” recorded in the Report by this committee objected to the section 553 blanket exemption. These senators argued that there were “no sufficiently compelling diplomatic reciprocity reasons for exempting the [Office of Foreign Missions] from federal rulemaking.” See id. at 46 (minority views). For reasons that were neither explained nor even mentioned in the subsequent Conference Report, this blanket exemption provision from the APA was ultimately deleted from the final bill that Congress enacted.
The City maintains that, in light of this legislative history, we should not interpret the “foreign affairs function” exception in § 553(a)(1) to apply to the State Department’s benefit designations under the FMA when Congress specifically deleted such an exception from the FMA itself. This contention has initial plausibility. But we decline to rely on the FMA’s ambiguous legislative history and Congress’s apparent decision not to enact an FMAspeeific blanket exemption from APA rules to alter what we believe is the best interpretation of these generally applicable APA rules,
i.e.,
section 553(a)(1). Subsequent organic statutes may supersede or modify APA requirements, but they must do so expressly.
See Yale-New Haven Hosp.,
V.
Because we hold that the State Department’s Notice was a lawful exercise of the Department’s power under the FMA, we decline to address the other issues originally raised in this appeal. Specifically, we take no ultimate position as to whether the Missions would have been exempt from property taxation in the absence of the Notice, either under international law pursuant to the VCCR and VCDR, or under section 418 of the New York Real Property Tax Law. We also do not address any of the questions raised regarding the District Court’s calculation of damages.
CONCLUSION
We hold that the State Department acted within its statutory authority under the FMA in issuing the Notice. Under the Notice, the City’s tax liens are invalid and no taxes on property owned by foreign governments and used to house staff of permanent missions to the United Nations or of consular posts are due and owing. Accordingly, we VACATE the opinion of the District Court. We also REVERSE the judgment of the District Court, and we REMAND to the District Court with instructions to DISMISS the actions brought against the Missions.
Notes
. In addition to bringing suit against Appellants, the City sued the Republic of Turkey ("Turkey”) and the Republic of the Philippines ("the Philippines”). Turkey subsequently settled with the City for $6 million.
See City of N.Y. v. Permanent Mission of India to the U.N.,
Because these missions are not parties to this appeal, all subsequent references to "the Missions” refer exclusively to the India Mission and the Mongolia Mission.
. A "mission,” in turn, "consists of a group of people sent by one state to another; it does not refer to the premises which they occupy in the receiving state.”
United States v. Kostadinov,
. As to the Philippines, the District Court also considered and rejected the argument — now asserted on appeal by Appellants — that its property was tax exempt under section 418 of the New York Real Property Tax Law.
See Permanent Mission II,
. The India Mission was charged interest at a rate of 18% from the period beginning in 1991 to the entry of judgment in 2008. The Mongolia Mission was charged the same interest rate for this time-period. For taxes dating from 1980 to 1990, the interest rate varied from 15% to 25.5%.
On the consent of the parties, these amounts included interest calculated through February 25, 2008. All interest thereafter was to be calculated on basis of federal post-judgment rates.
See Permanent Mission III,
. The Government has not taken a position, either in its briefs or at oral argument, on any of the other legal issues raised by these appeals, including the proper interpretation of the VCCR and the VCDR.
. "Privileges and immunities" refer to international law obligations the United States owes to foreign missions. Such obligations exist irrespective of the Secretary’s "benefit" designations. See 22 U.S.C. § 4310.
. The Senate Report for the Committee on Foreign Relations offered several examples, including (1) that in the Soviet Union and Eastern European countries, the United States was not permitted to purchase office and residential properties or even basic administrative support and services such as housing maintenance, utilities, or tickets for cultural events, and was instead required to obtain these items through government controlled organizations at a substantial surcharge, (2) that in several countries including Venezuela, Kuwait, Bahrain, the United Arab Emirates, and Indonesia, various restrictions were placed on the State Department’s ability to purchase or own housing, (3) that in countries such as Mexico, Venezuela, Singapore, and Guatemala, inequitable restrictions were placed on the import and export of the private vehicles and other personal effects of diplomats, and (4) that inequitable taxes on goods and services such as gasoline, heating oil, and construction materials were imposed in several countries including in Chile, Malta, and Portugal. S.Rep. No. 97-283, at 2-3 (1981). The House Report for the Committee on Foreign Affairs specifically singled out ”[t]he problem of taxation of diplomatic personnel” as "particularly vexing,” observing that "many host governments” failed to live up their obligations under international agreements, such as the VCDR and VCCR, creating “considerable extra expense to Foreign Service members.” H.R.Rep. No. 97-102, Pt. 1, at 26 (1981).
. The FMA has been used to designate a tax exemption in at least one other instance. In a notice issued in January 2009, the State Department designated an exemption from Federal and State or local excise taxes imposed with respect to tobacco products for foreign diplomatic and consular missions and personnel. See Designation of Benefits Under the Foreign Missions Act; Diplomatic and Consular Exemption from Tobacco Excise Taxes, 74 Fed.Reg. 5019 (Jan. 28, 2009). The Government represents to us that this notice reaffirmed a designation made in 1998, though there is no indication in the 2009 notice that this is so.
. The City draws this term from the FMA's legislative history.
See infra
pp. 189-92. The term is meant to express the idea that the State Department could tell cities and states what
not
to do with respect to certain matters
(e.g.
instructing a city not to allow a mission to relocate at a certain location) but could not impose affirmative obligations on the city or state in those areas
(e.g.
by requiring a city to allow a foreign mission to locate in a certain location in contravention of that city’s zoning laws). The term "negative preemption” has been used for different and entirely distinct purposes by other courts.
See, e.g., Fellner v. Tri-Union Seafoods, LLC,
. Another Senator, David Durenberger, appended his own views to the Report. He indicated general support for the bill but expressed concern about the "overreaching effects of Section 207” and the possibility that it would undermine decisions by local zoning boards. See S.Rep. No. 97-329, at 53 (1981) (additional views of Sen. Durenberger).
. There is one phrase in the Conference Report of the FMA discussing section 4307 as modified that could be read to support the City’s position. In the middle of various statements regarding this provision, there appears the following:
Should a State or local governmental entity wish to deny benefits which it is not obliged to grant, contrary to a determination by the *192 Secretary of Stale that such benefits should be granted, the matter would, as under present practice, be subject to resolution through discussions between the Department of State and the State or local governmental entity.
H.R.Rep. No. 97-693, at 43 (1982) (Conf. Rep.). But in context, it is clear that the Report was referencing benefit determinations relating to enumerated police powers— such as the authorization for a mission's location' — that the State Department cannot compel a State or municipality to accept under section 4307. As to these benefit designations, discussions in lieu of preemption were appropriate.
. The Notice does not, however, require a refund of taxes previously paid. See 74 Fed. Reg. 31,788 ("The exemption ... shall not operate to require refund of any taxes previously paid by any foreign government regarding such property.”).
. Our cases considering whether agencies have been delegated the authority to promulgate rules with retroactive effect have generally relied on the same presumption against retroactivity that has been recognized for statutory interpretation.
See, e.g., Rock of Ages Corp.,
Beyond this general presumption, some circuits have interpreted the APA to impose an additional bar to retroactive rulemaking, because of the APA’s definition of a "rule” to mean "an agency statement of general or particular applicability and
future effect,"
5 U.S.C. § 551(4) (emphasis added).
See, e.g., Celtronix Telemetry, Inc. v. FCC,
Our court has left open the question of whether and when a rule promulgated pursuant to the APA is permitted to be retroactive.
See NLRB v. Long Island Coll. Hosp.,
. The Executive's ability to resolve, in some circumstances, pending claims brought against foreign sovereigns pursuant to Executive Agreements,
see, e.g., Dames & Moore v. Regan,
. Except of course for when the rule
reflects
a specific constitutional command.
See Landgraf,
. Ernest L. Kerley, one of the United States' treaty negotiators for the VCDR, wrote the following in the 1962 — after the treaty was opened for signature but before it had been ratified by the United States — about tax exemption under article 23:
Since the term “premises of the mission” is defined in Article l(i) of the convention, the property to which the exemption granted by this article applies is determinable: it applies to the buildings or parts of buildings and the land ancillary thereto used for the purposes of the mission, including the residence of the head of mission. Whether realty held by the sending state as residences for members of the staff of the mission would be immune, would depend on the scope of the term "purposes of the mission.” Is the housing of members of the staff of the mission, especially the senior personnel who are expected to entertain members of other missions and of the government of the receiving state, a mission purpose? The use of the word “including” in Article 1 (i) does not exclude an affirmative answer.... The discussions at the Conference do not clarify this problem.
Ernest L. Kerley, Some Aspects of the Vienna Conference on Diplomatic Intercourse and Immunities, 56 Am. J. IntT L. 88, 109 (1962).
. Because of the substantial similarities between the language and structure of the VCCR and the VCDR on the issue of the tax status of staff residences, we consider the Fourth Circuit's reasoning relevant to the VCCR as well.
. The State Department issued a Diplomatic Note to the India Mission in 1993 ‘‘remind [ing]” the Mission that
exemption from property taxes is available only for that portion of the building used to house the Permanent Mission, which the United States Mission understands will occupy the first four floors of the building, and the residences of the Permanent Representative and the Consul General. The remainder of the building ... will be subject to New York City property taxes. Therefore, the Mission is encouraged to work with the City of New York to allocate the taxable and non-taxable portions of the structure and to settle other outstanding tax issues relating to the property.
Diplomatic Note HC-06-93 (Feb. 17, 1993). The State Department then reiterated this position in another Note it sent in 2001 to all United Nations missions:
The government- or mission-owned residence of any individual at the Permanent Mission with the title of Ambassador or Minister Plenipotentiary ... is also exempt from property tax under New York Real Property Tax Law [§ ] 418. The residence of the Chief of Mission of a consular post enjoys tax exemption under the [VCCR]. All other residential property owned by the Permanent Mission or the sending state and occupied by a diplomat or mission member of lesser rank is subject to property tax....
Diplomatic Note HC-12-01 (Apr. 5, 2001).
. This position was reaffirmed on multiple occasions. See Diplomatic Note 06-01, at 11 (Apr. 12, 2006), available at http://www.state. gov/documents/organization/l 25 05 9 .pdf ("Properties owned by foreign governments and used as residences of the members of the diplomatic mission accredited to the United States may also be granted exemption on the basis of the Vienna Convention on Diplomatic Relations, customary international law and reciprocity.”); Diplomatic Note to Sweden (July 18, 2001), available at http//www.state. gov/s/l/22686.htm (describing and endorsing conclusion reached in the 1986 notice that recognizes that "the nearly uniform custom and practice of States have ripened into a customary law obligation to provide tax exemption to Government owned residences housing members of the diplomatic mission, subject to reciprocity”).
. In addition, the nature of the City’s prior right to tax these buildings — to the extent it existed — and its property interest in the tax liens on the buildings was always circumscribed by the particular difficulties inherent in collecting such taxes. Even though the City is not barred by the FSIA from obtaining declaratory judgments to establish the validity of its tax liens,
see Permanent Mission of India,
