Margarito Castanon Nava v U.S. Department of Homeland SecurityMargarito Castanon Nava v U.S. Department of Homeland Security
LEE, Circuit Judge. In 2022, the Department of Homeland Security and the U.S. Immigration and Customs Enforcement (“Defendants“) entered into a Consent Decree with Plaintiffs negotiated over the course of two different administrations. In this lawsuit, Plaintiffs’ principal claim was that Defendants’ practice of warrantlessly arresting individuals—absent probable cause that the subjects were likely to escape before warrants could be obtained—violated
In exchange, Defendants obtained a dismissal with prejudice and release of all related claims, “avoid[ing] the substantial expense, inconvenience, and distraction of further protracted litigation ... and finally put[ting] to rest and terminat[ing]” the action. Id. at 2. Defendants do not challenge the validity of the original Consent Decree or the authority of the district court to enter it.
Instead, Defendants seek a stay pending appeal of two recent district court orders issued on October 7 and November 13, 2025. First, they challenge the district court‘s October 7 order extending the term of the Consent Decree by 118 days after finding that Defendants had failed to substantially comply with the Consent Decree. Second, Defendants seek to stay the district court‘s November 13 order requiring the release of 13 individuals, whom both parties agree were arrested in violation of
For the reasons explained below, Defendants’ request for a stay pending appeal of these rulings is granted in part and denied in part. The request for a stay of the October 7
I
A. The Consent Decree
In 2018, Plaintiffs filed this class action against the Department of Homeland Security (“DHS“), Immigration and Customs Enforcement (“ICE“), and various federal officials, alleging that they were arresting noncitizens without a warrant in violation of
Any officer or employee of the Service authorized under regulations prescribed by the Attorney General shall have power without warrant ... to arrest any alien in the United States, if he has reason to believe that the alien so arrested is in the United States in violation of [any law or regulation made in pursuance of law regulating the admission, exclusion, expulsion, or removal of aliens] and is likely to escape before a warrant can be obtained for his arrest ....
After several years of discovery and motion practice, the parties negotiated a settlement and signed the Consent Decree on November 29, 2021. On February 8, 2022, the district court granted final approval of the agreement, entered the Consent Decree, and certified the following class pursuant to
As part of the Consent Decree, Defendants agreed to issue a “Broadcast Statement of Policy” to all ICE officers affirming
The Consent Decree also laid out how the parties would address any future claims that Defendants had violated the terms of the Consent Decree. For example, in those instances where Plaintiffs believe that Defendants have arrested and detained an individual in violation of the agreement, they can raise the issue with Defendants and file a motion to enforce if the parties are unable to agree upon a resolution. Id. at 10–11. Furthermore, if Plaintiffs come to believe that Defendants have repeatedly and materially violated the Consent Decree, they can file a motion, after conferring with Defendants, and seek appropriate equitable relief from the court. Id. at 11.2
Under its terms, the Consent Decree was scheduled to expire on May 12, 2025, three years after its effective date. However, the parties agreed that it would only terminate on that date “absent a pending motion to enforce its terms.” Id. at 5.
B. The October 7 Order
On March 13, 2025, a few months before the scheduled termination date, Plaintiffs filed a motion to enforce, asserting that ICE had arrested 26 individuals in violation of
On April 14, 2025, Plaintiffs also filed a motion to modify the final approval order enforcing the terms of the Consent Decree under
While both motions were pending, a senior DHS official sent an email on June 11, 2025, unilaterally declaring that ICE‘s obligations under the Consent Decree were terminated:
Despite a pending motion to enforce the settlement agreement and motion to extend the settlement agreement, it remains terminated. Accordingly, I hereby rescind the May 27, 2022, Castañon-Nava Settlement Obligation statement of policy.
Dkt. 193 at 1.
On October 7, 2025, the district court granted the enforcement motion in part, finding that 22 of the 26 individuals identified in the enforcement motion were arrested in violation of the Consent Decree. Noting that the 22 individuals had already been released, the only relief that remained were fees
In the same order, the district court also granted Plaintiffs’
C. The November 13 Order
On October 20, 2025, Plaintiffs filed a Motion for Placement of Potential Class Members on Alternatives to Detention (“ATD motion“). Dkt. 219. The ATD motion was filed in response to Defendants’ request for a two-month extension to produce certain documents Plaintiffs had requested regarding the arrest of numerous individuals whom Plaintiffs believed had been arrested in violation of the Consent Decree. Given the delay, Plaintiffs asked the court to order Defendants to place “each potential class member” arrested prior to October 7, 2025, on ankle monitors or other alternatives to detention. Dkt. 219-9 at 1. Defendants argued that release of these “potential” class members contravened the Consent Decree, which permitted release only when Plaintiffs could establish that the arrest in question violated the Consent Decree and
On November 7, 2025, the parties filed a joint status report, which identified 46 arrests that the parties agreed violated the Consent Decree. (By the time of the report, only 15 remained in custody).3 At a hearing on November 12, 2025, the parties indicated that two additional individuals were no longer in detention and confirmed that there were 13 class members who had been arrested in violation of the Consent Decree and who remained in ICE detention. Defendants nevertheless opposed their release, asserting for the first time in this litigation that the 13 individuals, who were arrested without a warrant of any kind, were being detained pursuant to ICE‘s authority under
On November 13, 2025, the district court ordered the release of the 13 individuals. It also granted Plaintiffs’ broader request to release 615 individuals who potentially fell into the class, noting that “given the number of instances where the parties have agreed that the rights of the class members were violated, it stands to reason that a significant number of additional violations will be uncovered as plaintiffs receive and analyze the arrest records of the remaining arrestees.” Dkt.
II
Before the court is Defendants’ Emergency Motion to Stay the October 7 and the November 13 orders. Granting such a stay is “extraordinary relief.” See Somerville Pub. Schs. v. McMahon, 139 F.4th 63, 68 (1st Cir. 2025); Plaquemines Par. v. Chevron USA, Inc., 84 F.4th 362, 373 (5th Cir. 2023); United States v. Mitchell, 971 F.3d 993, 999 (9th Cir. 2020); Citizens for Resp. & Ethics in Washington v. Fed. Election Comm‘n, 904 F.3d 1014, 1017 (D.C. Cir. 2018). And the standard for obtaining that relief is “demanding.” Camelot Banquet Rooms, Inc., v. U.S. Small Bus. Admin., 14 F.4th 624, 628 (7th Cir. 2021); see Plaquemines, 84 F.4th at 373 (noting that the movant must meet a “heavy burden“).
When assessing a motion for a stay pending appeal, we consider: “(1) whether the stay applicant has made a strong showing that he is likely to succeed on the merits; (2) whether the applicant will be irreparably injured absent a stay; (3) whether issuance of the stay will substantially injure the other parties interested in the proceeding; and (4) where the public interest lies.” Nken v. Holder, 556 U.S. 418, 426 (2009) (quoting Hilton v. Braunskill, 481 U.S. 770, 776 (1987)). The first two factors “are the most critical.” Id. at 434. We will discuss each in turn.
A. Likelihood of Success on the Merits
1. The October 7 Order
Defendants first seek a stay of the district court‘s October 7 order modifying the Consent Decree to extend its term until February 2, 2026.5 In Defendants’ view, this relief violates
Regardless of the nature of the action or claim or of the identity of the party or parties bringing the action, no court (other than the Supreme Court) shall have jurisdiction or authority to enjoin or restrain the operation of the provisions of part IV of this subchapter [8 U.S.C. §§ 1221–1232], as amended by the Illegal Immigration Reform and Immigrant Responsibility Act of 1996, other than with respect to the application of such provisions to an individual alien against whom proceedings under such part have been initiated.
Section 1252(f)(1)‘s injunction bar is implicated here, Defendants argue, because the court‘s order restrains their ability to arrest and detain individuals under
a. Waiver
First, by entering into the Consent Decree in their quest to dismiss the underlying action with prejudice, Defendants5
Defendants resist this conclusion, contending that
Our colleague cautions against the use of waiver against governmental entities and believes that, before we hold Defendants to the commitments outlined in the Consent Decree, which was negotiated and signed during two prior administrations (although we note that one was President Trump‘s first term), we must consider whether doing so would be prudent given the concerns over democratic disempowerment expressed in Horne v. Flores, 557 U.S. 433, 447–50 (2009), and Evans v. City of Chicago, 10 F.3d 474, 478–79 (7th Cir. 1993) (plurality opinion). Is it wise, our colleague asks, to use consent decrees to hold one administration to the commitments (and waivers) of another?
In any event, Horne and Evans recognize at least two mechanisms to prevent such abuse, both of which apply here. The first is the availability of
b. The extension order does not violate § 1252(f)(1) .
But, even assuming
Defendants disagree, arguing that extending the Consent Decree will impede ICE‘s operation under
It is possible that the extension of the Consent Decree could result in ICE choosing to rely more on field-issued I-200 warrants (as it appears to have done), thereby indirectly influencing the way the agency employs
On the other hand, we believe that Defendants are likely to succeed on their argument that the district court ran afoul of
Here, the district court found that ICE had implemented a policy of issuing defective I-200 warrants in the field for the express purpose of avoiding its obligation under
c. The district court did not abuse its discretion.
Despite its discussion of I-200 warrants, the district court likely did not err when it granted Plaintiffs’
A party may move to modify a consent decree under
Here, even putting its rejection of the I-200 warrants to the side, the district court cited multiple instances where Defendants had failed to comply with the Consent Decree while making warrantless arrests (that is, arrests without a warrant of any kind, defective or otherwise). It also relied on the unilateral proclamation by a DHS senior official on June 11, 2025 that DHS would no longer comply with the Consent Decree. Accordingly, we cannot say that the district court abused its discretion when finding that Defendants’ substantial non-compliance with the Consent Decree constituted a significant change in circumstances that warranted a modification of the Consent Decree under
Furthermore, the court‘s modification was reasonable and narrowly tailored to the violation. Indeed, the district court rejected Plaintiffs’ request for a three-year extension and instead extended the Consent Decree by only 118 days, the period between June 11, 2025 (the date of the DHS email) and October 7, 2025 (the date of the order‘s issuance).11
For these reasons, even assuming they had not waived their
2. The November 13 Order
In its November 13 order, the district court mandated the release of 13 individuals whom the parties agreed were arrested in violation of the Consent Decree. It also granted Plaintiffs’ ATD motion and ordered the release of over 600 “potential class members” so long as Defendants had not11
In their motion to stay, Defendants contend that the release orders are barred by
As for those who were arrested without any warrant whatsoever, Defendants insist that the release orders still contravene
As an initial matter, there is a strong argument that Defendants waived this argument as well when they decided to enter into the Consent Decree (albeit Defendants did raise it12
The question is whether
That‘s because
Defendants disagree. In their view, an “applicant for admission” is synonymous with a person “seeking admission” because, as they put it, one cannot apply for something without also seeking it. And, admittedly, this argument has some superficial appeal. After all, a person does not apply for something they are not seeking. Moreover,
What is more, Defendants’ construction would render
Furthermore, the difference in treatment between a noncitizen at the border and one already in the United States fits within the broader context of our immigration law. Indeed, “[t]he distinction between an alien who has effected an entry into the United States and one who has never entered runs throughout immigration law.” Zadvydas v. Davis, 533 U.S. 678, 693 (2001); Leng May Ma v. Barber, 357 U.S. 185, 187 (1958). (“[O]ur immigration laws have long made a distinction between those aliens who have come to our shores seeking admission ... and those who are within the United States after an entry, irrespective of its legality.“).13
Thus, we conclude on this preliminary record that Defendants are not likely to succeed on the merits of their argument that those individuals, whom ICE arrested without a warrant,
Even though we conclude as a preliminary matter that
Nor do we think the discretion the court retained under Section V(B)(2) to “provide any equitable remedies not otherwise specified in this Agreement” would override the specific remedy the parties agreed to in Section IV(E). Thus, even as to those individuals who were arrested without a warrant, we believe that Defendants have a strong argument that the “potential class members” cannot be released absent individual determinations as required under Section IV(E).
To sum up, we conclude that Defendants have not established a likelihood of success on the merits as to their argument that the district court‘s October 7 order extending the term of the Consent Decree until February 2, 2026 violated
B. Irreparable Harm
Turning first to the October 7 modification order, Defendants do not persuasively explain how they would suffer
Defendants protest, contending that “[w]henever the Government is enjoined by a court order, it suffers irreparable sovereign harm.” Defs.’ Stay Motion at 19 (citing Trump v. CASA, Inc., 606 U.S. 831, 860-61 (2025)). This statement not only overstates the holding in CASA, but CASA itself is distinguishable on numerous grounds. First, of course, Defendants here voluntarily undertook the obligations set forth in the Consent Decree; CASA involved nothing of the sort. Second, CASA involved a universal injunction that prevented the government from enforcing its policies against nonparties; this case involves a
That said, we agree that Defendants will suffer irreparable harm if the district court‘s November 13 order requiring the release of individuals who were arrested pursuant to field-issued I-200 warrants is not stayed. Section
Similarly, we believe that Defendants will suffer irreparable harm if the district court‘s November 13 order mandating the release of individuals, who were arrested without a warrant, prior to individual violation determinations is not stayed. After all, this is not the bargain Defendants agreed to, and the Consent Decree carefully maps out what the district judge can or cannot order, balancing Defendants’
C. Remaining Factors
Turning to the remaining Nken factors, we conclude that staying the October 7 order‘s extension of the Consent Decree will substantially injure individuals who have been or will be subjected to warrantless arrests without probable cause in violation of
Lastly, the public interest factor is neutral. On the one hand, “control over matters of immigration is a sovereign prerogative, largely within the control of the executive and the legislature.” Landon v. Plasencia, 459 U.S. 21, 34 (1982). On the other, “there is a substantial public interest ‘in having governmental agencies abide by the federal laws that govern their existence and operations.‘” League of Women Voters of the U.S. v. Newby, 838 F.3d 1, 12 (D.C. Cir. 2016) (quoting Washington v. Reno, 35 F.3d 1093, 1103 (6th Cir. 1994)); see also Preston, 589 F.2d at 303 n.3 (remedy for ongoing violations of individual rights “certainly would serve the public interest“).
III
As we have noted, due to the nascent nature of this appeal, our conclusions today are preliminary and based on the limited record available to us. We have every confidence that the parties will present more fulsome arguments and a more comprehensive record when we address the appeal on the
During oral argument, Defendants requested that the court stay this order for 14 days to permit Defendants to seek emergency relief from the Supreme Court, if necessary. That request is GRANTED.
An expedited briefing schedule and oral argument date will be set by separate order.
I
A
The consent decree centers on just one part of the federal immigration laws: plaintiffs gave up their litigation in exchange for the government‘s promise to follow
To understand where the district court went wrong, start with the October 7 order. Based on a set of recent ICE arrests in the Chicago area, plaintiffs moved to enforce and modify the consent decree. While the parties agreed that some of ICE‘s arrests fell under
Something similar happened a month later. In the November 13 order, the district court considered plaintiffs’ request to release potential class members as a remedy for the
Were this consent decree between two private parties, the choice to interpret and enforce the agreement in this way might have been appropriate. But this consent decree isn‘t between two private parties. Temporary officeholders of the executive branch—not the United States itself—entered into the agreement. See Evans v. City of Chicago, 10 F.3d 474, 478 (7th Cir. 1993) (en banc) (plurality opinion). Enforcing the promises of those elected officials requires an awareness that “[t]oday‘s lawmakers have just as much power to set public policy as did their predecessors,” and that “democracy does not permit public officials to bind the polity forever.” Id. “Recognition of the uniqueness of [institutional reform litigation] must inform [the] decision whether to grant or deny” a motion to modify a consent decree involving a branch of government. Shakman v. City of Chicago, 426 F.3d 925, 934 (7th Cir. 2005) (emphasis added). And when elected officials make promises about executive power, a court interpreting and enforcing such promises should do so with “due regard for the separation of powers, the flexibility of equity, the ambiguity of the decree ... the sensitivity and importance of the subject
The majority contends that the government never raised these concerns, and so we ought to turn a blind eye to them now. Ante at 12 (citing Clark v. Sweeney, 607 U.S. ----, No. 25-52, 2025 WL 3260170, at *1 (U.S. Nov. 24, 2025)). Yet while the government may not have used the words “separation of powers” or cited our precedent in this area, it adequately raised these issues. The government noted that the agreement was entered by a previous administration, and that “[t]he district court‘s orders interfere with the Executive‘s immigration enforcement operations.” What‘s more, the “party presentation principle is supple, not ironclad.” United States v. Sineneng-Smith, 590 U.S. 371, 376 (2020). And we retain “the independent power to identify and apply the proper construction of governing law.” Kamen v. Kemper Fin. Servs., Inc., 500 U.S. 90, 99 (1991). The government raised this argument in general terms, and—given its significance—we should confront the constitutional dimensions of this case.
Plaintiffs settled in exchange for a promise that the government would conduct warrantless arrests in compliance with
B
That another federal law blocks courts from granting the relief at issue underscores the district court‘s errors. The INA—
The majority wrongly asserts that the government is barred from raising
The majority ties itself into knots attempting to explain why
The majority‘s approach to the November 13 order is even more problematic. The majority says that to decide if
This sort of analysis—a court can enjoin the government on a class-wide basis so long as the government has the law wrong—has been squarely foreclosed by the Supreme Court. See Aleman Gonzalez, 596 U.S. at 552-54. The majority seems to suggest that, if the government is wrong enough about the law, a class-wide injunction is permissible under
II
As discussed above, the government is likely to succeed on the merits of its appeal for two reasons: first, because the district court failed to consider the unique nature of this litigation in modifying and enforcing the decree; second, because the orders run afoul of the INA‘s injunction bar. The remaining factors for a stay are also met. See Nken v. Holder, 556 U.S. 418, 426 (2009).
The government faces irreparable harm. See Trump v. CASA, Inc., 606 U.S. 831, 860-61 (2025); Noem v. Vazquez Perdomo, No. 25A169, 2025 WL 2585637, at *3 (U.S. Sept. 8, 2025) (Kavanaugh, J., concurring) (“Any time that the Government is enjoined by a court from effectuating statues enacted by representatives of its people, it suffers a form of irreparable injury.“) (citation modified). The majority argues that the government suffers no harm from being forced to comply with a consent decree that it voluntarily entered. Ante at 24-25. But the consent decree addressed
Notes
Subject to subparagraphs (B) and (C), in the case of an alien who is an applicant for admission, if the examining immigration officer determines that an alien seeking admission is not clearly and beyond a doubt entitled to be admitted, the alien shall be detained for a proceeding under section 1229a of this title.