Full Opinion

FOR PUBLICATION FILED UNITED STATES COURT OF APPEALS OCT 30 2026 MOLLY C. DWYER, CLERK U.S. COURT OF APPEALS FOR THE NINTH CIRCUIT UNITED STATES OF AMERICA, No. 26-7231 D.C. No. Plaintiff - Appellant, 2:26-cv-12025-DOC-ADSCentral District of California, v. Los Angeles ORDER STATE OF CALIFORNIA; SHIRLEY WEBER, PH.D., in her official capacity as the California Secretary of State; DEAN LOGAN, in his official capacity as the County of Los Angeles Registrar- Recorder/County Clerk, Defendants – Appellees, SERVICES, IMMIGRANT RIGHTS AND EDUCATION NETWORK; MI FAMILIA EN ACCION; LEAGUE OF UNITED LATIN AMERICAN CITIZENS; NATIONAL ASSOCIATION FOR THE ADVANCEMENT OF COLORED PEOPLE; CALIFORNIA-HAWAII STATE CONFERENCE OF THE NATIONAL ASSOCIATION FOR THE ADVANCEMENT OF COLORED PEOPLE, Intervenors – Appellees. Before: Mark J. Bennett, Patrick J. Bumatay, and Gabriel P. Sanchez, Circuit Judges PER CURIAM: Dissent by Judge BUMATAY. The United States sued the State of California and the County of Los Angeles (the “County”)1 (collectively, “Defendants”), alleging that the Supremacy Clause prohibits Defendants from knowingly sending vote-by-mail ballots to individuals the federal government has identified as “likely” noncitizens and counting those ballots in violation of 18 U.S.C. § 611. The district court denied the United States’s application for a temporary restraining order (“TRO”), and the United States appeals. Presently before us is the United States’s emergency motion for an injunction pending appeal.2 We deny the United States’s motion because the United States has failed to meet its burden in showing that an injunction pending appeal is warranted. I. Over the summer months of 2026, the U.S. Citizenship and Immigration Services and the Department of Homeland Security Investigations obtained California’s voter roll and curated a list of “high-confidence” noncitizens who they 1 The United States sued Shirley N. Weber, in her official capacity as the California Secretary of State, and Dean C. Logan, in his official capacity as the County of Los Angeles – Registrar-Recorder/County Clerk. 2 The United States has asked us to expedite ruling and to rule by October 30, 2026. We do so. 2 believed were registered to vote in California. On October 12, 2026, the United States provided the list (“October List”) to Defendants and asked them to sequester the ballots of every name on the list so that the voters’ citizenships could be verified before the votes were separated from their envelopes and counted in the November 3, 2026, election. Defendants refused, expressing doubt about the veracity and reliability of the list. The United States sued Defendants on October 15, 2026, approximately two weeks before the 2026 midterm election, alleging that the Supremacy Clause prohibits Defendants from knowingly sending vote-by-mail ballots to likely noncitizens and counting those ballots. The United States claimed that these acts would violate 18 U.S.C. § 611. The United States moved for a TRO and appealed when the district court failed to rule on the TRO by a deadline the United States set for the court to rule. On appeal, the United States asked us for emergency relief in the form of a mandatory injunction ordering Defendants to “(1) to set aside vote-by-mail ballots from persons identified by the Federal Government likely to be noncitizens and (2) to independently—or in collaboration with the Federal Government—verify their citizenship status before tabulating their vote-by-mail ballot.” United States v. California, No. 26-7070, 2026 WL 3212945, at *1 (9th Cir. Oct. 26, 2026) (“California I”) (per curiam). We held that we lacked jurisdiction over the appeal, 3 granted the County’s motion to dismiss the appeal, and denied as moot the United States’s emergency motion for relief. Id. The district court then held a hearing on the TRO application on October 27, 2026. The next day, the district court issued an order denying the TRO. The United States immediately appealed and filed the instant emergency motion for an injunction pending appeal on October 29, 2026. The emergency motion seeks substantially the same relief, asking us to order California to sequester the relevant ballots and establish a process to verify the citizenship status of those voters before counting them. II. At the outset, and given the emergency posture of this case, we assume without deciding that the United States possesses both standing and a cause of action to sue Defendants. Under 28 U.S.C. § 1292(a)(1), we have appellate jurisdiction over appeals from interlocutory orders denying injunctive relief. “Ordinarily, we lack jurisdiction over the appeal of a TRO.” Newsom v. Trump, 141 F.4th 1032, 1043 (9th Cir. 2025) (per curiam). But a “denial of a TRO may be appealed if the circumstances render the denial tantamount to the denial of a preliminary injunction.” Babaria v. Blinken, 87 F.4th 963, 976 (9th Cir. 2023) (citation modified) (quoting Religious Tech. Ctr., Church of Scientology Int’l, Inc. v. Scott, 869 F.2d 1306, 1308 (9th Cir. 1989)). To decide that question, we have primarily considered 4 two factors: (1) whether there was a “full adversary hearing” in the district court; and (2) whether “in the absence of review, the appellants would be effectively foreclosed from pursuing further interlocutory relief.” Scott, 869 F.2d at 1308 (quoting Env’t Def. Fund, Inc. v. Andrus, 625 F.2d 861, 862 (9th Cir. 1980)). We have also considered whether “‘the denial of the TRO effectively decided the merits of the case’ and rendered plaintiff[’s] claims moot.” Blinken, 87 F.4th at 976 (quoting Graham v. Teledyne-Cont’l Motors, 805 F.2d 1386, 1388 (9th Cir. 1986)). We have jurisdiction over this appeal. First, the district court conducted a two-hour “adversary hearing” at which it heard arguments from all parties on the merits of the United States’s requested TRO. See Andrus, 625 F.2d at 862. Both the United States and Defendants were afforded “notice [and] an opportunity to respond,” and both were able to submit briefing and “additional evidence” to the district court. Blinken, 87 F.4th at 976; see also Washington v. Trump, 847 F.3d 1151, 1158 (9th Cir. 2017) (per curiam) (finding appellate jurisdiction where both parties “vigorously contested the legal basis for the TRO in written briefs and oral arguments before the district court”); Newsom, 141 F.4th at 1043–44 (noting a TRO that was “strongly challenged” in the district court is more likely to be “best construed as an appealable preliminary injunction” (quoting E. Bay Sanctuary Covenant v. Trump, 932 F.3d 742, 762 (9th Cir. 2018)). 5 In addition, the district court’s order denying the United States’s motion for a TRO “effectively foreclosed” the United States “from pursuing further interlocutory relief.” Scott, 869 F.2d at 1308 (quoting Andrus, 625 F.2d at 862). In the United States’s Complaint, it asked the district court to enjoin California from tabulating ballots from voters it had classified as “likely noncitizens in the upcoming federal election.” Compl. at 3, No. 26-cv-12025 (C.D. Cal. Oct. 15, 2026), ECF No. 1.3 But at the adversarial hearing, the district court stated that it did not have the “appropriate time” to develop a full record on the relevant “systems” and “algorithms” surrounding the veracity of the United States’s list of “likely” noncitizens. TRO Hearing Transcript at 93, ECF No. 150. It thus appointed a special master to review the United States’s voter roll data and suggested convening another hearing in two weeks—well after Election Day on November 3, 2026—to further develop a record on the issue. Id. at 93–94. And it noted that the purpose of the future hearing would be to determine the veracity of the October List, in the event the United States adds additional individuals to the list and wishes to bring “indictment[s] against them.” Id. at 90. In doing so, the district court in large part rendered the United States’s claim—which is ostensibly based on sequestering ballots in the instant election rather than prosecuting noncitizens afterward—“moot,” or at least moot in substantial part because the election is days away. See Blinken, 87 F.4th at 976. 3 All ECF cites refer to the entries in Case No. 26-cv-12025. 6 The “transcript of the hearing and the court’s written order denying the application [for a TRO] make it unmistakably clear that the order was tantamount to a denial of a preliminary injunction.” Scott, 869 F.2d at 1308. Thus, we have appellate jurisdiction and may proceed to the merits. See Newsom, 141 F.4th at 1044. III. “The standard for evaluating an injunction pending appeal is similar to that employed by district courts in deciding whether to grant a preliminary injunction.” Feldman v. Ariz. Sec’y of State’s Off., 843 F.3d 366, 367 (9th Cir. 2016) (en banc). The United States “must establish that [it] is likely to succeed on the merits, that [it] is likely to suffer irreparable harm in the absence of preliminary relief, that the balance of equities tips in [its] favor, and that an injunction is in the public interest.” Winter v. Nat. Res. Def. Council, Inc., 555 U.S. 7, 20 (2008). As to the first factor, which is the most important, Env’t Prot. Info. Ctr. v. Carlson, 968 F.3d 985, 989 (9th Cir. 2020), the question is usually whether the movant is likely to succeed in arguing on appeal that the district court abused its discretion in denying the preliminary injunction, see Brown ex rel. K.M.K. v. Wash. Interscholastic Activities Ass’n, No. 26-5488, 2026 WL 2891827, at *2 (9th Cir. Sept. 25, 2026). “A district court abuses its discretion if it bases its decision on an erroneous legal standard or on clearly erroneous factual findings.” Id. (quoting Baird v. Bonta, 81 F.4th 1036, 1040 (9th Cir. 2023)). And here, the United States’s burden 7 is “doubly demanding,” because it seeks a mandatory injunction requiring Defendants to segregate ballots that they would not otherwise segregate and to affirmatively verify certain voters’ citizenship status before tabulating their vote-by- mail ballot. See Garcia v. Google, Inc., 786 F.3d 733, 740 (9th Cir. 2015) (en banc). The United States therefore “must establish that the law and facts clearly favor [its] position, not simply that [it] is likely to succeed.” Id. IV. A. We begin with the United States’s likelihood of success on the merits—“the most important” of the Winter factors—and whether the “law and facts clearly favor [its] position, not simply that [it] is likely to succeed.” Garcia, 786 F.3d at 740. The United States once again requests that we order Defendants to segregate the ballots of alleged noncitizens because, it claims, 18 U.S.C. § 611 preempts California’s constitutionally permitted statutory scheme adopted by the California legislature. But the United States has not made the required showing that such extraordinary relief, during an ongoing election, is clearly required by law. Because this dispute focuses on California’s procedures for administering its elections, the Elections Clause of the U.S. Constitution is directly implicated. See Arizona v. Inter Tribal Council of Arizona, Inc., 570 U.S. 1, 8–9 (2013) (“ITCA”). The Elections Clause reads: 8 The Times, Places and Manner of holding Elections for Senators and Representatives, shall be prescribed in each State by the Legislature thereof; but the Congress may at any time by Law make or alter such Regulations, except as to the Places of chusing Senators. U.S. Const. art. I, § 4, cl. 1. This clause expressly dictates which sovereign has the authority to prescribe the manner by which congressional elections are conducted. Thus, the question remains whether California’s procedures for enforcing election requirements, such as the State’s statutory scheme for citizenship-based ballot challenges, have been preempted by Congress. “[T]he [Elections] Clause functions as ‘a default provision; it invests the States with responsibility for the mechanics of congressional elections, but only so far as Congress declines to pre-empt state legislative choices.’” ITCA, 570 U.S. at 9 (quoting Foster v. Love, 522 U.S. 67, 69 (1997)). This “broad authority,” Smiley v. Holm, 285 U.S. 355, 367 (1932), conferred on states includes the authority over “notices, registration, supervision of voting, protection of voters, prevention of fraud and corrupt practices, counting of votes, [and] duties of inspectors . . . in short, to enact the numerous requirements as to procedure and safeguards which . . . are necessary in order to enforce the fundamental right involved,” id. at 366. Congress, of course, “may supplement these state regulations or may substitute its own” because “[i]t has a general supervisory power over the whole subject.” Id. at 366–67 (citation modified); ITCA, 570 U.S. at 14 (noting “[t]he 9 assumption that Congress is reluctant to pre-empt does not hold when Congress acts under” the Elections Clause). But Congress’s exercise of its Elections Clause preemption power only goes “so far as it is exercised, and no farther.” ITCA, 570 U.S. at 9 (quoting Ex parte Siebold, 100 U.S. 371, 392 (1880), abrogated on other grounds by Glasgow v. Moyer, 225 U.S. 420 (1912)). Indeed, when Congress “exercise[s] th[is] power, . . . we are bound to presume that Congress has done so in a judicious manner [and] that it has endeavored to guard as far as possible against any unnecessary interference with State laws and regulations.” Siebold, 100 U.S. at 393. Nothing in § 611, a statute that criminalizes voting by a noncitizen, preempts California’s comprehensive statutory scheme that has been duly enacted under the Elections Clause. Section 611 provides that: (a) It shall be unlawful for any alien to vote in any election held solely or in part for the purpose of electing a candidate for the office of President, Vice President, Presidential elector, Member of the Senate, Member of the House of Representatives, Delegate from the District of Columbia, or Resident Commissioner, unless– (1) the election is held partly for some other purpose; (2) aliens are authorized to vote for such other purpose under a State constitution or statute or a local ordinance; and (3) voting for such other purpose is conducted independently of voting for a candidate for such Federal offices, in such a manner that an alien has the opportunity to vote for such other purpose, 10 but not an opportunity to vote for a candidate for any one or more of such Federal offices. (b) Any person who violates this section shall be fined under this title, imprisoned not more than one year, or both. 18 U.S.C. § 611(a)–(b). Noticeably absent from the statute is an express preemption provision or any language setting forth regulations for how a state deals with citizenship challenges to vote-by-mail ballots. Nor is there any provision authorizing the Department of Justice to take charge of or intervene in a state’s administration of an ongoing election.4 Exercising the power endowed to it by the Constitution, California comprehensively administers its elections, including by regulating voter eligibility. California law, like federal law, plainly prohibits voting by noncitizens. Compare 18 U.S.C. § 611, with Cal. Const. art. II, § 2(a) (“A United States citizen 18 years of age and resident in this State may vote.”). To that end, California has established a comprehensive statutory scheme to ensure the integrity of its elections, including by requiring voter applicants to attest to citizenship under penalty of perjury, requiring election officials to match signatures on vote-by-mail ballots to voter registration records, and establishing processes for challenging ballots and canceling registration 4 We do not hold that § 611 could never preempt any state actions or law under the Elections Clause, as that broad question is not before us. Instead, we hold only that—in this case and under these particular facts—the United States’s attempted use of § 611’s preemptive force to obtain the relief it seeks does not align with § 611’s text or what § 611 either permits or forbids. 11 upon sufficient showing of voter ineligibility. See California I, 2026 WL 3212945, at *11–12, 19 (Bennett, J., concurring) (detailing California’s statutory scheme on citizenship challenges to a voter and vote-by-mail ballots). If Congress intends to preempt, “state law is preempted by the federal election-day statutes only so far as the conflict extends.” Watson v. Republican Nat’l Comm., 609 U.S. 672, 697 (2026) (internal quotations omitted); see also Siebold, 100 U.S. at 392–93 (noting Congress’s power to regulate elections “supersede[s]” inconsistent state law “so far as it is exercised, and no farther” and presuming “that Congress . . . has endeavored to guard as far as possible against any unnecessary interference with State laws and regulations”). But it is unclear (at best) whether Congress intended § 611 to have any preemptive effect, much less a preemptive effect that forces states to set aside their own state election laws and procedures (which, in California’s case, are both detailed and comprehensive) and segregate vote-by-mail ballots in a manner inconsistent with those laws and procedures based on the Department of Justice’s unsubstantiated allegations that noncitizens may be voting. Nothing on the face of § 611 prescribes a process California must follow when handling challenged ballots or preempts Defendants’ actions of mailing, counting, and resolving ballot challenges in accordance with California’s duly enacted procedures. See 18 U.S.C. § 611(a)–(b). 12 Because Congress has not exercised the specific power granted to it under the Elections Clause to override California’s established laws for challenging ballots or removing ineligible voters, the State Legislature’s statutory scheme remains the only method to do so. California, and all states, “are given, and in fact, exercise a wide discretion in the formulation of a system for the choice by the people of representatives in Congress,” see United States v. Classic, 313 U.S. 299, 311 (1941), by prescribing a detailed statutory and regulatory scheme, see Moore v. Harper, 600 U.S. 1, 29 (2023) (“[State l]egislatures must ‘provide a complete code for congressional elections,’ including regulations ‘relati[ng] to notices, registration, supervision of voting, protection of voters, prevention of fraud and corrupt practices, counting of votes, duties of inspectors and canvassers, and making and publication of election returns.’” (second alteration in original) (quoting Smiley, 285 U.S. at 366)). Allowing the United States to misuse § 611 to prescribe how Defendants must process ballots would “override the plain and manifest dictates of the Constitution itself.” See Siebold, 100 U.S. at 392.5 5 The United States asserts that it is “absur[d] to say that an officer who receives or has custody of the ballots given for a representative owes no duty to the national government which Congress can enforce.” Siebold, 100 U.S. at 388. But Siebold dealt with whether Congress had the power to regulate election integrity by punishing state election officials who commit fraud, not a misdemeanor statute that forbids noncitizens voting in federal elections. See id. at 372, 387–88. As explained by the Supreme Court, “[the government of the United States] is directly interested in the faithful performance, by the officers of election, of their respective duties. Those duties are owed as well to the United States as to the State. . . . A violation of 13 We decline the United States’s invitation to contravene the Elections Clause by undermining the Constitution’s plain text. See Smiley, 285 U.S. at 365–66 (recognizing the responsibilities given to states under the Elections Clause); cf. Dooley v. United States, 183 U.S. 151, 173 (1901) (“The plain language of the Constitution should not be made ‘blank paper by construction,’ and its specific mandate ought to be obeyed.”). If the United States believes different procedures are necessary for vote-by-mail ballots, we believe it should take that suggestion to Congress, not the courts. See Watson, 609 U.S. at 695 (“As we have said time and again . . . policy arguments are properly directed to legislatures, not courts.”). Therefore, we hold the law does not “clearly favor” the United States’s preemption argument. See Garcia, 786 F.3d at 740. Further, the potential violation of the National Voter Registration Act (“NVRA”), 52 U.S.C. § 20507(c)(2), provides an independent reason to conclude that the United States has not shown a clear likelihood of success. The NVRA requires states to “complete, not later than 90 days prior to the date of a primary or duty is an offence against the United States, for which the offender is justly amenable to that government.” Id. at 388. Because election officials owe a duty to both sovereigns, the Court concluded that it would be “almost absur[d] to say that an officer who receives or has custody of the ballots . . . owes no duty to the national government which Congress can enforce; or that an officer who stuffs the ballot-box cannot be made amenable to the United States.” Id. This case is not about state election officials convicted of fraud, nor are there allegations that California’s election officials were stuffing ballot boxes. 14 general election for Federal office, any program the purpose of which is to systematically remove the names of ineligible voters from the official lists of eligible voters.” 52 U.S.C. § 20507(c)(2)(A). The United States argues that the NVRA, which governs voter registration, does not govern the requested ballot segregation. But this focus potentially fails to grasp the broader mechanics of California’s election code. The United States effectively seeks to cancel (or potentially cancel) “batches of registered voters based on a set procedure [which] is systematic as opposed to individualized.” Mi Familia Vota v. Fontes, 129 F.4th 691, 716 (9th Cir. 2025), cert. granted sub nom. Republican Nat’l Comm. v. Mi Familia Vota, 146 S. Ct. 2799 (2026). Assuming that the October List provides or generates sufficient proof of voter ineligibility, under California law, when the “county elections official” receives “proof that [a registered voter] is otherwise ineligible to vote,” the official “shall cancel the registration.” Cal. Elec. Code § 2201(a)(8) (emphasis added). So the consequence of the United States’s request is not merely ballot segregation, but ultimately both the cancellation of the ballot and the removal of voters from the voting rolls. To be sure, as we have recognized, “the plain language of the 90-day Provision lets states continue any non-systematic cancellation of registrations within the 90- day window.” Mi Familia Vota, 129 F.4th at 716. Indeed, Congress permitted such individualized cancellations but prohibited systematic ones “because such programs 15 can cause inaccurate removal and ‘[e]ligible voters removed days or weeks before Election Day will likely not be able to correct the State’s errors in time to vote.’” Id. (alteration in original) (citing Arcia v. Fla. Sec’y of State, 772 F.3d 1335, 1346 (11th Cir. 2014)). Such “rigorous individualized inquiry[] lead[s] to a smaller chance for mistakes.” Id. But the United States seeks to challenge an entire batch of 20,000 ballots. In the district court’s view, “Plaintiff’s protocol raises significant concerns.” For example, the district court determined that the United States “provided ‘no error rates’ or ‘validation against a reliable benchmark’ that would enable a determination of the accuracy of its findings.” The district court also found that the United States did not provide any information on how the data enhancement was conducted—“It remains unknown how Lexis Nexis performed its analysis, such as how it ‘linked names to Social Security numbers not available on the California public voter file.’” The suspect reliability of these lists found by the district court reflects the concern Congress sought to mitigate with the 90-day quiet period. This adds to our reasons for finding that overall, the district court did not abuse its discretion in refusing to grant the United States’s proposed injunction, as the United States did not clearly show the NVRA permits its desired relief. B. 16 The United States also fails to demonstrate that it will likely, let alone clearly, suffer irreparable harm. See Garcia, 786 F.3d at 740. Because the United States’s preemption argument is likely unavailing, it follows that any resulting harm is also unlikely. Cf. Hale v. Dep’t of Energy, 806 F.2d 910, 918 (9th Cir. 1986) (“Absent a First Amendment claim, the appellants have failed to establish that irreparable harm will flow from a failure to preliminarily enjoin defendants’ actions.”). The district court also found that the United States’s process in creating the October List was not credible, and thus the United States’s assertion that individuals on the October List are “highly likely to be noncitizens” is also not credible.6 That finding, along with California’s established procedures for ensuring voter eligibility, substantially weaken the United States’s claim that it is likely to suffer irreparable harm from ballots being cast by noncitizens. The balance of hardships and the public interest also do not weigh in the United States’s favor. Major concerns remain that granting the United States’s requested relief might result in immense hardship to Defendants and harm the public interest by risking the disenfranchisement of eligible voters and putting the entire tabulation process in jeopardy. The district court found that the United States’s “request for election officials to identify and segregate ballots belonging to 6 The United States challenges the district court’s findings. But it fails to show any clear error given the conflicting evidence in the record. See Baird v. Bonta, 81 F.4th 1036, 1040 (9th Cir. 2023). 17 individuals on the October List would force Defendants to create wholly new procedures while the election is already underway.” Crediting the declaration of the County’s Assistant Registrar of the Information Technology Bureau, the district court stated that the scale of the required technological changes to California’s voter system “cannot be completed safely and uniformly before Election Day,” and could result in a failure of the County’s central election management system, “jeopardizing the Secretary’s ability to meet the election certification deadline of December 11.” As a result, the district court found that “granting [the United States]’s request would provoke catastrophic change, upending the administration of the election. This would likely cause ‘voter confusion and consequent incentive to remain away from the polls’ as individuals would wonder whether their ballots were likely to be withheld.” (quoting Purcell v. Gonzalez, 549 U.S. 1, 4–5 (2006)).7 To be sure, there are countervailing public interests at stake. There is a public interest in maintaining the integrity of elections. But as discussed, the district court found that the risks that noncitizens are voting are, at best, uncertain, and also 7 There were conflicting declarations on the potential burden that would result from granting the United States’s requested relief. But the district court reasonably credited the declaration of the County’s Assistant Registrar of the Information Technology Bureau, who is presumably informed about the inner workings of the County’s electronic voter system, over the declaration from an elected Registrar from a different county. The district court certainly did not abuse its discretion in this regard. 18 tempered by California’s established voter-eligibility procedures. In contrast, there is a material risk that granting the United States its requested relief would result in disenfranchisement and could jeopardize the County’s entire election. Thus, the balance of hardships and the public interest weigh in Defendants’ favor. Finally, Purcell counsels that we should not intervene at this late hour. The Purcell principle reflects the wisdom that we must not “alter the election rules on the eve of an election.” Republican Nat’l Comm. v. Democratic Nat’l Comm., 589 U.S. 423, 424 (2020) (per curiam). “The Purcell principle applies with even greater force” when, as here, an election is already underway. People Not Politicians v. Onder, No. 26A388, 2026 WL 2883222, at *2 (U.S. Sept. 25, 2026) (per curiam); see California I, 2026 WL 3212945, at *18 (Sanchez, J., concurring) (explaining that “it is not only voter confusion that matters in the Purcell analysis but election administration and broader electoral disorder stemming from late federal court- ordered changes to election rules”). Just this year, the Supreme Court emphasized that “late-breaking, court-ordered rule changes,” such as those the United States requests, “can ‘result in voter confusion and consequent incentive to remain away from the polls,’ and thus undermine the ‘[c]onfidence in the integrity of our electoral processes . . . essential to the functioning of our participatory democracy.’” Bost v. Ill. State Bd. of Elections, 607 U.S. 71, 80 (2026) (quoting Purcell, 549 U.S. at 4– 5)). 19 Defendants, pursuant to their constitutional authority, established rules and procedures to challenge a voter’s ineligibility in the months directly preceding an election. And the United States’s requested relief is simple only in the abstract. As the district court found—and we discern no clear error—there is no feasible way to identify and segregate the ballots of specific individuals without potentially catastrophic effects on the entire system.8 The United States contends there is no Purcell problem, relying in part on Republican Party of Pennsylvania v. Boockvar, No. 20A84, 2020 WL 6536912, at *1 (Mem) (U.S. Nov. 6, 2020). The comparison is inapt. In Boockvar, Pennsylvania’s Secretary of the Commonwealth had ordered county boards of elections to segregate ballots received by mail within three days of election night. Id. Justice Alito issued an interim order merely commanding electoral officials “to comply with the [Secretary’s] . . . guidance.” Id. The segregation process, therefore, followed existing state guidance and was markedly simpler than the injunction requested by the United States. As the district court found, “[b]ecause the county Registrar’s current system ‘ha[s] no function for setting aside the ballots of designated voters,’ complying with [the United States’s] request would require 8 Indeed, the declaration of the County’s Assistant Registrar of the Information Technology Bureau states: “[B]ased on my technical expertise, I have grave concerns about the potential catastrophic impact of implementing the DOJ’s request to ‘set aside vote-by-mail ballots from persons identified by the Federal Government likely to be noncitizens’ based on a list of approximately 20,000 individuals . . . .” 20 ‘changes to systems and procedures that have already been tested and finalized for this election, the development and documentation of a new process, and the training of staff on it.’” V. For these reasons, the district court did not abuse its discretion in denying the United States’s application for a temporary restraining order, and so we DENY the United States’s emergency motion for injunctive relief. 21 FILED OCT 30 2026 United States v. California et al., No. 26-7231 BUMATAY, Circuit Judge, dissenting: MOLLY C. DWYER, CLERK U.S. COURT OF APPEALS “A sovereign without the means of enforcing civil rights, or compelling the performance, either civilly or criminally, of public duties on the part of the citizens, would be a most extraordinary anomaly.” 3 Joseph Story, Commentaries on the Constitution of the United States § 1668 (1833). In this case, the federal government believes that 20,000 noncitizens are registered to vote in California. Both state and federal law prohibit aliens from voting in our elections. Yet according to the federal government, those aliens received mail-in ballots for the upcoming election. If California receives these suspect ballots, mixes them with legitimate ballots, and then processes them, the potentially illegal votes will be counted toward the election of our representatives— threatening to dilute the vote of eligible citizens. The federal government proposes a modest remedy—stopping California from mixing the ballots of citizens and suspected noncitizens. This solution would not cancel any vote but would allow time to verify the eligibility of suspected noncitizens. The district court, and now our court, denies this reasonable request. But the equitable remedy the federal government seeks has a long legal and historical pedigree. Throughout history, federal courts have acted to protect the voting and civil rights of our citizens by enjoining state action that violates the law. And common sense also tells us that the federal government shouldn’t have to sit on 1 its hands while a State allows the violation of federal law, especially when the integrity of federal elections is at stake. As the Founders recognized, “an exclusive power of regulating elections for the national government, in the hands of the State legislatures, would leave the existence of the Union entirely at their mercy. They could at any moment annihilate it.” The Federalist No. 59, at 362–63 (A. Hamilton) (C. Rossiter ed., 1961) (simplified). So legal tradition, history, and common sense all support granting this limited injunctive relief. This is all the more true given California’s lax system for verifying citizenship. During oral argument, Los Angeles County, California’s most populous county, could give no evidence that it independently verifies the citizenship of its voters. Instead, it apparently relies only on applicants’ attestation of their citizenship. Further, the County claimed that nearly 40% of a sample of suspected noncitizens from the federal government’s list had been born in the United States. But when the federal government ran the same sample through its systems, it confirmed that none were born here. And the County doesn’t rebut the federal government beyond the say-so of the potential voters themselves. Now California says it can do nothing to prevent illegal voting. That undermines the federal government’s interest in promoting election integrity and preventing the dilution of lawful votes. 2 The district court’s order denying injunctive relief hamstrings the federal government’s efforts to ensure only citizens vote in our elections. First, it criticized the federal government’s actions to protect election integrity in other States—even though those actions were not before the court. It then attempted to tie the federal government’s hands. It said that all the government could do under 18 U.S.C. § 611(a) was prosecute those who voted illegally. But in the next breath, it turned around and warned the federal government not to “threaten” criminal prosecutions under the law. Of course, the district court has no authority to order that. The federal government—not a judge—is tasked with preventing and prosecuting federal crimes. On the district court’s view, § 611 could have no preemptive effect— rejecting obstacle preemption—and thus could not support any injunctive relief. As I wrote in my first dissent, the federal government has satisfied the requirements for injunctive relief. See Winter v. Nat. Res. Def. Council, 555 U.S. 7, 20 (2008). First, the federal government has shown a likelihood of success on the merits because California’s actions encourage and induce the violation of federal law. Second, the federal government has shown irreparable harm—failing to act now means that suspected noncitizens will vote in our upcoming election and potentially dilute the vote of everyday citizens. Cf. Hall v. D.C. Bd. of Elections, 141 F.4th 200, 206 (D.C. Cir. 2025) (“Logically and mathematically, . . . granting the franchise to noncitizens will expand the D.C. electorate and reduce the voting 3 power of each U.S. citizen voter in local elections.”). And third, the balance of interests supports relief: “The due and fair election of [congressional] representatives is of vital importance to the United States.” Ex parte Siebold, 100 U.S. 371, 388 (1879). We should have granted relief on the federal government’s initial emergency motion. More so now, when there is no question of our appellate jurisdiction. We should have ordered California to stop commingling suspected illegal ballots with legitimate ones to the extent feasible. To my initial dissent, I add three points. First, because the Elections Clause authorized Congress to enact § 611(a), we should have been more willing to order injunctive relief over the administration of California’s ballot counting. Second, criminal statutes—like § 611(a)—often preempt contrary state law