This case requires us to determine whether an agency interpretation ordinarily owed deference under the framework established in
Chevron U.S.A Inc. v. Natural Resources Defense Council, Inc.,
I. BACKGROUND
Santos Hernandez-Carrera and Pablo Santiago Hernandez-Arenado are natives and citizens of Cuba. They entered the United States illegally in 1980, during the Mariel boatlift. Although both were classified as “inadmissible aliens,” they were granted immigration parole in the United States. The government revoked both aliens’ parole, however, in part because of their criminal convictions while on parole. Mr. Hernandez-Carrera and Mr. Hernandez-Arenado were both issued exclusion and deportation orders, based on their lack of entry documents and their convictions for crimes of moral turpitude.
Under the Immigration and Nationality Act, once a final order of removal has been entered against an alien, the government typically must remove the alien from the United States within ninety days. 8 U.S.C. § 1231(a)(1)(A). However, 8 U.S.C. § 1231(a)(6) authorizes the Attorney General to detain certain classes of aliens beyond the ninety day removal period. It provides, in relevant part, that:
An alien ordered removed who is inadmissible under section 1182 of this title, removable under section 1227(a)(1)(C), 1227(a)(2), or 1227(a)(4) of this title or who has been determined by the Attorney General to be a risk to the community or unlikely to comply with the order of removal, may be detained beyond the removal period....
In February 2006, immigration judges separately ordered the continued detention of Mr. Hernandez-Carrera and Mr. Hernandez-Arenado, pursuant to 8 C.F.R. § 241.14, a regulation promulgated by the Attorney General under 8 U.S.C. § 1231(a)(6). • This regulation allows United States Immigration and Customs Enforcement (“ICE”) to “continue detention of particular removable aliens on account of special circumstances even though there *1243 is no significant likelihood that the alien will be removed in the reasonably foreseeable future.” 8 C.F.R. § 241.14(a). The regulation recognizes four categories of aliens whose special circumstances warrant continued detention: (1) aliens with a highly contagious disease that is a threat to public safety; (2) aliens detained on account of serious adverse foreign policy consequences of release; (3) aliens detained on account of security or terrorism concerns; and (4) aliens determined to pose a special danger to the public. 8 C.F.R. § 241.14(b-d), (f).
Both Mr. Hernandez-Carrera and Mr. Hernandez-Arenado were found to “pose a special danger to the public” under 8 C.F.R. § 241.14(f). Under § 241.14(f), in order to justify an alien’s continued detention, the government must prove by clear and convincing evidence that the alien has: (1) previously committed one or more crimes of violence as defined in 18 U.S.C. § 16; that (2) due to a mental condition or personality disorder and behavior associated with that condition or disorder, the alien is likely to engage in acts of violence in the future; and (3) no conditions of release can reasonably be expected to ensure the safety of the public. On the basis of Mr. Hernandez-Carrera’s and Mr. Hernandez-Arenado’s criminal records and mental health evaluations, immigration judges found these elements to be satisfied in both cases.
Mr. Hernandez-Carrera was convicted of rape with force and bodily injury in 1988. He was again convicted of battery and indecent exposure in 1990 and sentenced to additional jail time. Upon his release from prison in 1993, Mr. Hernandez-Carrera was detained by the Immigration and Naturalization Service (“INS”). While in INS custody, Mr. Hernandez-Carrera was diagnosed with schizophrenia and examined several times by Bureau of Prisons personnel. A mental health evaluation concluded that, if released, Mr. Hernandez-Carrera “would need a high level of structure and security and continued 24-hour supervision for the rest of his life.” Even then, the report concluded that “it is most probabl[e] that Mr. Hernandez-Carrera would be a direct danger to the public;” another report determined that it was “quite likely” that he would engage in future violence if released. The immigration judge (“IJ”) concluded that the evidence “establishes that [Mr. Hernandez-Carrera’s] refusal to take medication, along with [his] mental condition, makes relapse, escape, and decomposition, highly likely if [he] is released from prison.” The IJ therefore determined that “no reasonable conditions of release would ensure public safety” and ordered Mr. Hernandez-Carrera’s continued detention.
Mr. Hernandez-Arenado was convicted of sexually assaulting a seven year-old boy in 1984. He has admitted to involvement in “several hundred” pedophilic contacts with children in Cuba and in the United States. App. 98. Upon completing his sentence in 1987, he was released into INS custody. While in custody, he was diagnosed with pedophilia. Several mental health evaluations concluded that Mr. Hernandez-Arenado could not be released without exposing the public to danger, noting that he was unlikely to change his behavior or to “accept constraints upon his acting on his impulses and feelings.” Indeed, Mr. Hernandez-Arenado has stated on several occasions that he does not believe sex with children is wrong. The IJ agreed with the government’s mental health expert that if he was released, “nothing [would] stop [Mr. Hernandez-Ar-enado] from grabbing a child off the street and molesting the child just as he has done in the past.” He therefore concluded that “there are no reasonable conditions of release that can reasonably be expected to ensure the safety of the public” and or *1244 dered Mr. Hernandez-Arenado’s continued detention.
Both aliens filed petitions for a writ of habeas corpus under 28 U.S.C. § 2241, challenging the constitutionality of their continued detention under 8 U.S.C. § 1231(a)(6) and 8 C.F.R. § 241.14. The district court believed itself to be governed by the Supreme Court’s interpretation of 8 U.S.C. § 1231(a)(6) in
Zadvydas v. Davis,
Mr. Hernandez-Carrera has been released pending this appeal. Mr. Hernandez-Arenado was ordered released, but the government has separately sought to detain him under the Adam Walsh Act, 18 U.S.C. § 4248. On June 9, 2008, the United States District Court for the Southern District of Illinois dismissed the government’s attempt to civilly commit Mr. Hernandez-Arenado.
United States v. Hernandez-Arenado,
II. ANALYSIS
It is well established that an agency’s construction of a statute that it administers may be owed deference by courts when “the statute is silent or ambiguous” on the issue in question and the agency’s reading represents a “permissible construction of the statute.”
Chevron U.S.A., Inc. v. Natural Resources Defense Council, Inc.,
Therefore, in order to determine whether the Attorney General’s construction of 8 U.S.C. § 1231(a)(6) warrants deference, notwithstanding the Supreme Court’s contrary construction of the statute in Zadvy-das and Martinez, we must ask: 1) whether “the statute is silent or ambiguous” as to the Attorney General’s authority to detain certain categories of aliens beyond the ninety day removal period; and 2) whether the agency’s construction of the statute *1245 represents a “permissible reading of the statute.” It is to these questions we now turn.
A.Whether 8 U.S.C. § 1231(a)(6) is “Silent or Ambiguous”
We need not wrestle long with whether 8 U.S.C. § 1231(a)(6) is ambiguous. The Supreme Court has twice explicitly found the statute to be ambiguous as to whether and under what circumstances Congress authorized the Attorney General to detain aliens indefinitely. In
Zadvydas,
the government argued that the statute, by its clear terms, did not place a “limit on the length of time beyond the removal period that an alien who falls within one of the § 1231(a)(6) categories may be detained.”
Zadvydas,
That § 1231(a)(6) is ambiguous is further shown by the Court’s invocation of the canon of constitutional avoidance in both
Zadvydas
and
Martinez.
“The canon of constitutional avoidance comes into play only when, after the application of ordinary textual analysis, the statute is found to be susceptible of more than one construction. ...”
Martinez,
B.Whether the Agency’s Construction is “Permissible”
A more serious question is presented as to whether the agency’s construction of § 1231(a)(6), as implemented in 8 C.F.R. § 241.14, is a “permissible” one. The Attorney General promulgated 8 C.F.R. § 241.14 in response to the Supreme Court’s holding in Zadvydas, in order to provide for the continued detention of limited classes of aliens in a manner comporting with constitutional requirements. See Continued Detention of Aliens Subject to Final Orders of Removal, 66 Fed.Reg. 56,-968-69 (Nov. 14, 2001). The regulation interpreted § 1231(a)(6) to authorize an alien’s long-term non-punitive detention only where limited special circumstances are present and particular procedural requirements are satisfied.
Mr. Hernandez-Carrera and Mr. Hernandez-Arenado, however, argue that 8 C.F.R. § 241.14 is an unreasonable construction of § 1231(a)(6) for three reasons. First, they argue that the Attorney General is no longer free to construe § 1231(a)(6), on the theory that the Supreme Court’s holdings in Zadvydas and Martinez conclusively established the meaning of the statute. Second, they argue that “the canon of constitutional avoidance used in Zadvydas and [Martinez ] to interpret the statute trumps Chevron deference.” Aple. Br. 21, and that this precludes us from deferring to the agency in this case. Finally, they argue that even if deference is permissible as a general matter, the agency’s construction of § 1231(a)(6) is unreasonable, because it raises serious questions as to the statute’s constitutionality under the Due Process *1246 Clause. We consider each argument in turn.
1. Does the Principle of Brand X Apply When the Prior Judicial Interpretation Was By the Supreme Court?
Mr. Hernandez-Carrera and Mr. Hernandez-Arenado first contend that the Supreme Court’s construction of § 1231(a)(6) in
Zadvydas
and
Martinez
forecloses any subsequent, contrary interpretation by the Attorney General. Similarly, the district court concluded that
“Zadvydas
and
Martinez
decide the constitutional extent of the Attorney General’s authority under 8 U.S.C. § 1231(a)(6).”
Hemandez-Carr-era,
The Supreme Court held in
Chevron
that “ambiguities in statutes within an agency’s jurisdiction to administer are delegations of authority to the agency to fill the statutory gap in reasonable fashion.”
Brand X,
In
Chevron,
the Supreme Court deferred to an agency’s resolution of a statutory ambiguity, finalized through notice- and-comment rulemaking,
before
the Court had an opportunity to construe the statute. Here, the aliens urge us not to defer to an agency construction because it was developed only
after
the Supreme Court had construed the statute in a contrary manner. As the Supreme Court noted in
Brand X,
however, “whether Congress has delegated to an agency the authority to interpret a statute does not depend on the order in which the judicial and administrative constructions occur.”
Brand X
When a court tentatively resolves an ambiguity in a statute that an agency is empowered to administer, such a resolution carries the force of law until an agency issues a definitive interpretation of the kind that would ordinarily warrant
Chevron
deference. This does not make judicial decisions subject to reversal by executive officers.
Brand X
Mr. Hernandez-Carrera and Mr. Hernandez-Arenado argue that
Brand X
“only applies to lower court decisions.” Aple Br. 22. We disagree. It is true, of course, that
Brand X
itself involved the
*1247
question of whether the Ninth Circuit’s' — ■ rather than the Supreme Court’s — prior judicial construction of the Communications Act foreclosed a subsequent agency interpretation.
See Brand X,
The aliens also rely on Justice Stevens’ concurrence in
Brand X
While agreeing that an agency’s interpretation is not foreclosed by a
lower
court’s prior construction, Justice Stevens suggested that the majority’s reasoning “would not necessarily be applicable to a decision by [the Supreme Court] that would presumably remove any pre-existing ambiguity.”
Brand X,
Even if we understood Justice Stevens’ concurrence to suggest that this question remains open, we would find unpersuasive the argument that
Brand X
applies to lower courts, but not to the Supreme Court. All of the “anomalous results” that would have followed from a contrary holding in
Brand X
would follow equally from a contrary holding in this case.
See Brand X,
*1248
For all these reasons, we conclude that the holding of
Brand X
applies whether the judicial precedent at issue is that of a lower court or the Supreme Court. In sum, a court’s — even the Supreme Court’s — prior interpretation of a statute that an agency is empowered to administer forecloses an agency’s reasonable construction only if the relevant judicial decision held the statute to be unambiguous.
See id.
at 984,
We recognize that this holding leads us to conflict with the results reached by the two other circuits to consider the Attorney General’s revised construction of § 1231(a)(6).
See Tran v. Mukasey,
We believe that the Fifth and Ninth Circuits erred by concluding that the Supreme Court could authoritatively and finally interpret § 1231(a)(6).
Brand X
makes clear that even after a court construes an agency’s statute, “the agency may, consistent with the court’s holding, choose a different construction, since
the agency remains the authoritative interpreter
(within the limits of reason) of such statutes.”
Brand X,
We are reassured in disagreeing with the Fifth and Ninth Circuit by the fact that neither court considered the Supreme Court’s Brand X decision. 1 In contrast, Judge Kozinski, dissenting from denial of rehearing en banc in Thai, anticipated Brand X to reach a conclusion similar to that which we reach today.
The Supreme Court [in Zadvydas ], confronted with a very broad statute, narrowed its scope to avoid unconstitutionality, but the Court’s method of narrowing is not the only permissible one. The AG, pursuant to his statutory delegation of regulatory authority, has selected a different method of conforming the statute to the requirements of the Constitution.... See Thai v. Ashcroft,389 F.3d 967 , 971 (9th Cir.2004) (Kozin *1249 ski, J., dissenting from denial of en banc).
We conclude that
Tran
and
Thai
misconstrued the nature of the Supreme Court’s decisions in
Zadvydas
and
Martinez.
In
Zadvydas,
the Supreme Court did not purport to “resolve” the statutory ambiguity in § 1231(a)(6) once and for all. Rather, the Court merely (properly, as we shall explain) declined to defer to an agency interpretation that raised serious constitutional doubts, and was therefore an unreasonable construction of Congress’ intent. Because it owed the agency no deference, it was free to conclude that detention was authorized only for a six-month period. In no way, however, did the Court signal that its interpretation was the only reasonable construction of § 1231(a)(6). To the contrary, the Court specifically found the statute to be ambiguous. See
Zadvydas,
Thus, notwithstanding the contrary results reached by the Fifth and Ninth Circuits, we conclude that the agency’s construction of § 1231(a)(6) is owed Chevron deference to the extent that it is reasonable. To be sure, this reasonableness inquiry requires us to address whether, and in what manner, an agency’s interpretive discretion is constrained by the canon of constitutional avoidance — questions we consider next.
2. Does the Constitutional Avoidance Canon Preclude Deference to the Agency Interpretation?
Mr. Hernandez-Carrera and Mr. Hernandez-Arenado contend that the canon of constitutional avoidance requires that we eschew deference to the agency’s interpretation of § 1231(a)(6). The avoidance canon provides that “where an otherwise acceptable construction of a statute would raise serious constitutional problems, the Court will construe the statute to avoid such problems unless such construction is plainly contrary to the intent of Congress.”
Edward J. DeBartolo Corp. v. Florida Gulf Coast Bldg. & Constr. Trades Council,
It is well established that the canon of constitutional avoidance does constrain an agency’s discretion to interpret statutory ambiguities, even when
Chevron
deference would otherwise be due. In
Edward J. DeBartolo Corp. v. Florida Gulf Coast Building & Construction Trades Council,
“Where an administrative interpretation of a statute invokes the outer limits of Congress’ power, we expect a clear indication that Congress intended that result.”
Solid Waste Agency of N. Cook County v. U.S. Army Corps of Eng’rs,
We think it would be helpful here to add a word about the interplay between the canon of constitutional avoidance and the framework of administrative deference codified in
Brand X.
It may well be that some ambiguous statutes are susceptible of only one interpretation that avoids constitutional doubts. In such a case, both agencies and courts are obligated to interpret the statute in the one manner that does not raise a serious constitutional question. To the extent that a court unequivocally concludes that constitutional avoidance compels one, and only one, reading of a statute, such a holding would constitute “a judicial precedent holding that the statute unambiguously forecloses [a contrary agency interpretation], and therefore [would] contain[ ] no gap for the agency to fill.”
Brand X,
It will frequently be the case, however, that an ambiguous statute susceptible of one interpretation raising serious constitutional doubts will be open to other readings that raise no such doubts. When this is the case, a court’s initial application of the avoidance canon to construe an ambiguous statute would not foreclose the agency from adopting a different reasonable interpretation, if that interpretation also avoided the constitutional concerns. Likewise, if an agency initially construed a statute in a manner raising constitutional doubts — an interpretation *1251 that Zadvydas makes clear that a court would be right to reject — this would not foreclose the agency from later construing the statute in a different manner that avoids those doubts. In such a case, the later agency interpretation is due deference to the extent that would otherwise be appropriate under the Chevron framework, even if it conflicts with an intermediate judicial construction of the statute that applied the canon of constitutional avoidance.
We therefore conclude that even after a court has construed a statute to avoid constitutional doubts, an agency remains free to interpret the same statute in a different manner so long as its subsequent interpretation is reasonable and avoids serious constitutional questions. A court’s prior judicial construction of a statute, applying the avoidance canon, precludes an alternative agency construction only when no alternative, reasonable construction would avoid constitutional doubts. In that case the only “permissible” construction is the reading which does not provoke a serious constitutional question. In the ordinary case, however, courts should review a new agency interpretation afresh to determine whether the agency’s reading sufficiently avoids raising constitutional doubts, such that it ought to be entitled to deference.
3. Does the Agency’s Interpretation of § 1231(a)(6) Raise Serious Constitutional Doubts?
We thus come finally to the question of whether the agency’s construction of 8 U.S.C. § 1231(a)(6), as codified in 8 C.F.R. § 241.14, avoids raising serious constitutional doubts. In the context of this case, this demands an inquiry into whether the Attorney General’s revised construction of the scope and nature of his authority to detain aliens under § 1231(a)(6) comports with due process. Because we find that the substantive limitations built into the Attorney General’s power to detain aliens beyond the removal period, as well as the procedural protections provided in such cases, are sufficient to satisfy due process, we conclude that the agency’s construction of § 1231(a)(6) no longer raises serious constitutional doubts.
Although freedom from detention “ ‘has always been at the core of the liberty protected by the Due Process Clause from arbitrary government action,’ that liberty interest is not absolute.”
Kansas v. Hendricks,
Bearing this framework in mind, we consider the agency interpretation reviewed by the Supreme Court in
Zadvydas
and
Martinez,
as well as the agency’s revised construction of § 1231(a)(6) before us today. In
Zadvydas,
the government argued that by the clear terms of § 1231(a)(6), Congress did not place a “limit on the length of time beyond the removal period that an alien who falls within one of the § 1231(a)(6) categories may be detained.”
Zadvydas,
Moreover, under the government’s reading of § 1231(a)(6) in
Zadvydas,
aliens would have been entitled only to minimal procedural protections. In particular, an alien would have borne the burden of proving that he was not dangerous; if the alien failed to establish his non-dangerousness, indefinite detention would follow.
See id.
at 691,
In
Clark v. Martinez,
the government relied on the same construction of 1231(a)(6) that had been rejected in
Zad-
vydas.
2
The government attempted to distinguish
Zadvydas
by arguing that the constitutional problems with interpreting § 1231(a)(6) to authorize indefinite detention for admitted aliens were not present in the case of aliens who have never been admitted. Although the Court acknowledged that this might have been correct, it held that its earlier construction of § 1231(a)(6)’s ambiguous language applied to each class of alien governed by the statute.
Martinez,
In both
Zadvydas
and
Martinez,
the only agency interpretation to which the Court was asked to defer was one authorizing indefinite detention for every re-
*1253
movable alien covered by § 1231(a)(6) and providing minimal procedural protection. Applying the canon of constitutional avoidance, the Court concluded that Congress had not vested the Attorney General with such a constitutionally problematic detention authority. The Attorney General’s revised reading of § 1231(a)(6) before us today, finalized through notice-and-comment rulemaking, avoids those constitutional concerns. Bearing the Court’s guidance in
Zadvydas
in mind, the Attorney General now interprets § 1231(a)(6) to authorize detention beyond the removal period only in limited special circumstances.
See
8 C.F.R. § 241.14(a) (“The Service may invoke the procedures of this section in order to continue detention of particular aliens
on account of special circumstances
....”) (emphasis added). Detention beyond the removal period is authorized only in situations where the government’s interest in an alien’s continued detention is particularly strong: in the cases of (1) aliens with a highly contagious disease that is a threat to public safety; (2) aliens detained on account of serious adverse foreign policy consequences of release; (3) aliens detained on account of security or terrorism concerns; and (4) aliens determined to pose a special danger to the public. 8 C.F.R. § 241.14(b-d), (f). Therefore, in contrast to the expansive scope of ICE’s detention authority advanced by the government in
Zadvydas,
the Attorney General has now interpreted § 1231(a)(6) only to authorize continued detention for a “small segment of ... individuals” whose release would particularly endanger the public’s health or safety, 8 C.F.R. § 241.14(b), (d), (f), or the nation’s foreign relations. 8 C.F.R. § 241.14(c).
See Hendricks,
Moreover, the Attorney General has substantially enhanced the evidentiary requirements imposed on the agency and the procedural protections available to an alien before he can be detained because he poses a special danger under 8 C.F.R. § 241.14(f). First, an alien can be detained under this subsection only upon the finding that he has: (1) previously committed one or more crimes of violence as defined in 18 U.S.C. § 16; that (2) due to a mental condition or personality disorder and behavior associated with that condition or disorder, the alien is likely to engage in acts of violence in the future; and (3) no conditions of release can reasonably be expected to ensure the safety of the public. This directly responds to the
Zadvydas
Court’s guidance that “[i]n cases in which preventive detention is of potentially
indefinite
duration, we have also demanded that the dangerousness rationale be accompanied by some other special circumstance, such as mental illness, that helps to create the danger.”
Zadvydas,
Equally importantly, the burden of proof is now on the agency to prove dangerousness, rather than on the alien to show non-dangerousness. In order to continue detention beyond the removal period because an alien poses a special danger to the public, the government must first demonstrate that there is “reasonable cause to go forward with a merits hearing.” 8 C.F.R. § 241.14(h). The alien is provided with written notice of the hearing and his rights, as well as a statement summarizing the agency’s factual basis for continuing detention. 8 C.F.R. § 241.14(g)(l-3). The alien is also provided with a list of free legal services providers, and may be represented by an attorney or other representative of his or her choice in accordance with 8 C.F.R. § 292. 8 C.F.R § 241.14(g)(3)©. At the hearing, the alien has the opportunity to examine evidence against him, present evidence in his behalf, and cross-examine witnesses or any authors of medical or mental health reports used as a basis for his continued detention. 8 *1254 C.F.R. § 241.14(g')(3)(i-iv). If ICE can show reasonable cause, a merits hearing is scheduled. 8 C.F.R. § 241.14(h)(3).
At the merits hearing, the agency has the burden of proving “special danger” by clear and convincing evidence. 8 C.F.R. § 241.14(i)(l). If the IJ determines that continued detention is warranted, ICE is responsible for providing an “ongoing, periodic review of the alien’s continued detention,” to determine whether changed circumstances warrant his immediate release. 8 C.F.R. § 241.14(k)(l). At the alien’s request, the government will undertake a review of his case as frequently as once every six months. 8 C.F.R. § 241.14 (k) (2 — 3).
Mr. Hernandez-Carrera and Mr. Hernandez-Arenado raise both substantive and procedural due process challenges to the regulations authorizing their continued detention. We are confident, however, that due process is satisfied here. As an initial matter, we note that it is not at all clear that removable aliens benefit from precisely the same advantages of due process as do citizens or lawful permanent resident aliens. To be sure, “the Due Process Clause applies to all ‘persons’ within the United States, including aliens, whether their presence here is lawful, unlawful, temporary, or permanent.”
Zadvydas,
Regardless of the precise nature of the protections that removable aliens are entitled to, we find Mr. Hernandez-Carrera’s and Mr. Hernandez-Arenado’s due process arguments unconvincing. The aliens first argue that the agency should be required to prove dangerousness beyond a reasonable doubt, rather than by clear and convincing evidence. However, even in a case involving citizens, a unanimous Supreme Court has upheld the use of a clear and convincing evidence standard in an indefinite civil commitment proceeding.
Addington v. Texas,
Next, the aliens contend that the regulations are constitutionally deficient because they do not, on their face, require the government to offer psychiatric treatment. However, Mr. Hernandez-Carrera and Mr. Hernandez-Arenado point to no evidence that aliens detained pursuant to 8 C.F.R. § 241.14 do not receive treatment. In fact, the record shows that the government attempted to provide treatment to both appellees. The IJ concluded, in agreement with mental expert testimony, that Mr. Hernandez-Carrera “refused to take his medication,” even when “in the highly structured environment of the medical ward in the prison.” App. 118. Indeed, this finding was central to the IJ’s conclusion that no conditions of release could reasonably be expected to ensure the public’s safety.
See
App. 118-119. Likewise, the IJ in Mr. Hernandez-Arenado’s
*1255
case noted that Mr. Hernandez-Arenado had refused to take part in group therapy and continued to reject treatment because of his “deep seated belief that his [pedo-philic] actions are not inappropriate.” App. 131. In addition, the Department of Health Services expert testified on cross-examination before the IJ that there was no cure for pedophilia, App. 131; due process surely does not require the provision of treatment for an untreatable mental condition.
See Hendricks,
Next, Mr. Hernandez-Arenado and Mr. Hernandez-Carrera contend that 8 C.F.R. § 241.14(f) does not allow for the oversight of an Article III judge. However, as this case illustrates, aliens who believe that their continued detention is unlawful may challenge ICE’s determination by seeking a writ of habeas corpus in federal court. This is sufficient to satisfy the requirements of the Due Process Clause. “The writ of habeas corpus has always been available to review the legality of Executive detention,” and both “[b]e-fore and after the enactment in 1875 of the first statute regulating immigration,” the jurisdiction [of federal courts to grant the writ] was “regularly invoked on behalf of noncitizens, particularly in the immigration context.”
I.N.S. v. St. Cyr,
Finally, Mr. Hernandez-Carr-era and Mr. Hernandez-Arenado argue that due process is violated because the regulations provide “no right to a jury, no court-appointed counsel at government expense, no court-funded experts for the defense.” Aple. Br. 26. First, we note that this case does not require us to decide whether the government must provide counsel to aliens detained under § 1231(a)(6). “A plaintiff may challenge a statute or regulation on an as-applied basis ‘only insofar as it has an adverse impact on his own rights.’ ”
United States v. Friday,
Likewise, Mr. Hernandez-Carrera and Mr. Hernandez-Arenado cannot prevail on a facial constitutional challenge on this score. While we have left undecided whether a plaintiff making a facial challenge must “establish that
no set of circumstances
exists under which the Act would be valid,”
Doctor John’s, Inc. v. City of Roy,
We likewise reject the aliens’ claims of right to juries and experts. In a civil commitment proceeding, “state power is not exercised in a punitive sense.”
Addington,
We therefore conclude both that the Attorney General’s interpretation of 8 U.S.C. § 1231(a)(6) satisfies due process. Because the Attorney General’s statutory interpretation raises no serious constitutional question, and therefore represents a “reasonable” interpretation of the statute, it is entitled to Chevron deference.
III. CONCLUSION
For the foregoing reasons, we find that the agency’s revised interpretation of § 1231(a)(6) is reasonable, and therefore owed
Chevron
deference. The Attorney General’s construction of 8 U.S.C. § 1231(a)(6), as interpreted in 8 C.F.R. § 241.14 avoids the constitutional and interpretive problems recognized in
Zadvy-das
and
Martinez.
Unlike in
Zadvydas,
the Attorney General is no longer advancing a construction of § 1231(a)(6) raising serious constitutional doubts. Nor is he arguing that the Court’s opinion in
Zadvy-das
itself can be read to authorize indefinite detention for some § 1231(a)(6) aliens while simultaneously only permitting limited detention for others.
See Martinez,
The Attorney General’s interpretation of 8 U.S.C. § 1231(a)(6) reads Congress to have authorized the detention beyond ninety days of limited classes of aliens — including those who are particularly dangerous, mentally ill, and cannot be released with *1257 out jeopardizing the public’s safety — so that they need not be released into the general population only because no other country will accept them. Because his interpretation is eminently reasonable, it is one to which we owe deference.
We therefore VACATE the district court’s order granting the writ of habeas corpus to Mr. Hernandez-Carrera and Mr. Hernandez-Arenado, and REMAND the case to the district court for further proceedings not inconsistent with this opinion.
Notes
. The Ninth Circuit's decision in Thai predated Brand X. However, the court did not even address Chevron itself.
. Although 8 C.F.R. § 241.14 had been promulgated by the time of
Martinez,
it was not at issue in that case. Both aliens before the Supreme Court in
Martinez
were detained by the INS before 2000 pursuant to governing regulations at that time.
See Zadvydas,
. Our conclusion makes it unnecessary to determine whether the government would be required to offer treatment as a matter of due process in a situation where effective treatment was available and an alien was amenable to treatment.
