Trump v. CASA, Inc. Revisions: 6/27/25
The Supreme Court ruled that federal courts cannot issue 'universal injunctions' — orders blocking the government from enforcing a law or policy against everyone, not just the plaintiffs in a lawsuit — because such sweeping remedies have no historical basis in equity law and were never authorized by Congress.
The ruling leaves the birthright citizenship executive order blocked only for the named plaintiffs while sending the cases back to lower courts to narrow the injunctions, but it does not decide whether the executive order is constitutional — that question remains open.
How it got here: Three district courts issued universal preliminary injunctions against the executive order; three courts of appeals denied stays; the federal government filed emergency applications to the Supreme Court seeking partial stays.
The Case in Depth
What happened
President Trump signed an executive order in January 2025 directing federal agencies to stop recognizing birthright citizenship — the longstanding rule that virtually everyone born on U.S. soil is automatically an American citizen — for children of parents who are in the country without legal status or only temporarily. Immigrants-rights groups, pregnant women, and 22 states sued, arguing the order directly contradicts the Fourteenth Amendment and over a century of settled law. Three federal district courts agreed the order was likely unconstitutional and issued broad orders blocking it from being enforced against anyone in the country.
The question before the Court
Can a federal court order the government to stop enforcing a law or policy against everyone in the country — not just the people who actually sued?
The Court's answer
No — federal courts do not have authority to issue a "universal injunction" blocking a law or policy against everyone in the country. Under the Judiciary Act of 1789, courts' equitable power extends only to remedies that existed in English courts of equity at the founding. No remedy resembling a universal injunction — one that bars enforcement against all people, not just the plaintiffs who sued — appeared in those courts, and the universal injunction did not appear in American courts until 1963, more than 170 years later. Because the remedy has no founding-era pedigree, Congress never granted federal courts that power.
The Court did not decide whether the birthright citizenship executive order is constitutional — that question was not before it. The injunctions remain in place for the named plaintiffs, and the lower courts must redraw them to cover only what is necessary to give each plaintiff complete relief. Whether the state plaintiffs' cross-border financial injuries require a broader but still plaintiff-focused order is left for the lower courts to work out on remand.
Curious how the Court got there? See the step-by-step legal reasoning →
Why it matters
People affected by a federal law or executive order will generally be protected only if they are named plaintiffs in a lawsuit. Everyone else must join a class action or file their own suit to get protection. The decision makes it harder to quickly stop sweeping executive actions nationwide, meaning contested policies can be enforced against people who have not gone to court while litigation is pending.
What changes now
The preliminary injunctions remain in force to protect the named plaintiffs and their children; the executive order cannot be enforced against them while the lawsuits continue. Lower courts must redraw the injunctions to cover only what is necessary for each plaintiff's complete relief, including reconsidering whether the state plaintiffs' cross-border financial injuries justify a broader plaintiff-focused order. The constitutional question — whether the birthright citizenship executive order violates the Fourteenth Amendment — remains unresolved and must be litigated on the merits in the lower courts, with potential future Supreme Court review.
What this does not decide
The Court explicitly does not decide whether the birthright citizenship executive order violates the Fourteenth Amendment's Citizenship Clause or the Nationality Act. It also does not resolve whether states have standing to assert residents' rights, whether Article III separately bars universal relief, or whether the Administrative Procedure Act independently authorizes courts to vacate federal agency rules.
Concurrences and dissents
How the Justices voted
Majority (6). Justice Barrett (author), joined by Justice Roberts, Justice Thomas, Justice Alito, Justice Gorsuch, and Justice Kavanaugh.
Dissent (3). Justice Sotomayor (author), joined by Justice Kagan and Justice Jackson.
Concurrence — Justice Thomas
Justice Thomas wrote to emphasize that the complete-relief principle is a ceiling on courts' authority, not a mandate. Courts must ensure injunctions comport with both the complete-relief principle and traditional equitable limits, and cannot invoke 'complete relief' as a backdoor to recreate universal injunctions. He warned lower courts against broad interpretations of complete relief that would replicate the problems the majority's ruling was meant to solve.
Concurrence — Justice Alito
Justice Alito flagged two unresolved issues that could undermine the ruling in practice: whether states have 'third-party standing' to assert their residents' constitutional rights (which could let states obtain effectively nationwide injunctions on behalf of all residents), and whether district courts will rigorously enforce Rule 23's class-certification requirements rather than certifying broad classes as a workaround. He warned that lax enforcement of either doctrine could revive universal injunctions under a different name.
Concurrence — Justice Kavanaugh
Justice Kavanaugh concurred to explain that the Supreme Court will still often be the ultimate decisionmaker on the interim legal status of major federal laws and executive actions. When lower courts produce a patchwork of inconsistent rulings on nationally significant matters, the losing side will regularly seek emergency relief from the Supreme Court, which can effectively set a nationally uniform rule on a preliminary basis. He argued the Court should not presume to deny such applications in significant cases.
Dissent — Justice Sotomayor
Justice Sotomayor argued that the birthright citizenship executive order is 'patently unconstitutional' under the Fourteenth Amendment, over a century of Supreme Court precedent, and longstanding executive-branch practice. She contended that universal injunctions have deep roots in equity — including bills of peace, taxpayer suits, and early Supreme Court cases like Pierce v. Society of Sisters — and that the majority's rigid historical test misunderstands equity's inherently adaptive nature. She would have denied the stay applications because the government cannot be irreparably harmed by being ordered to follow settled constitutional law.
Dissent — Justice Jackson
Justice Jackson argued the majority's ruling creates a 'zone of lawlessness' in which the Executive can choose whether to follow the Constitution with respect to anyone who has not yet sued. In her view, the fundamental role of federal courts is to require the Executive to follow the law — not merely to give relief to individual parties — and the majority fatally mischaracterizes the Judiciary's constitutional function. She warned the ruling threatens the rule of law itself and will disproportionately harm those too poor or underresourced to file their own lawsuits. Read the full dissent →
How the Court got there
The legal reasoning, step by step
- The governing test comes from Grupo Mexicano de Desarrollo (1999): the Judiciary Act of 1789 grants federal courts jurisdiction over 'all suits in equity,' but that statutory grant covers only those remedies 'traditionally accorded by courts of equity' at the country's founding. A modern remedy need not have an exact historical match, but it must have a sufficiently close founding-era antecedent in English equity practice.
- In English courts of equity, suits were brought by and against individual parties, and injunctions could bind only parties to the suit — 'you cannot have an injunction except against a party to the suit,' as a 1802 English case put it. There was, in short, no remedy 'remotely like a national injunction' in English equity practice, and American founding-era courts followed the same party-specific approach.
- American courts consistently rejected requests for relief beyond the named parties throughout the 18th and 19th centuries. The first arguably universal injunction did not appear until 1963 — over 170 years after the founding — and remained rare until the 21st century. That prolonged absence of the remedy confirms it was never part of federal courts' equitable authority under the Judiciary Act.
- Respondents argued that 'bills of peace' — an English equity device allowing courts to resolve disputes affecting whole communities — are a founding-era predecessor to universal injunctions. The Court rejected this analogy: bills of peace involved small, cohesive groups whose absent members were actually bound by the resulting decree. That device evolved into the modern class action under Rule 23, not into the universal injunction, and universal injunctions impermissibly circumvent Rule 23's procedural protections.
- 'Complete relief' does not mean 'universal relief.' The equitable tradition allows courts to give plaintiffs complete relief as between the parties — blocking the executive order as to a named plaintiff's unborn child gives that plaintiff full relief. Extending the block to cover everyone similarly situated across the country does not make her relief any more complete; it goes beyond what the complete-relief principle permits.
- When a district court enters an injunction that likely exceeds the equitable authority Congress granted in the Judiciary Act, that improper intrusion on a coordinate branch of government constitutes irreparable harm to the government — sufficient to justify a partial stay. The government need not also prove it would ultimately win on the underlying birthright citizenship question; the stay standard requires only a strong showing of likely success on the threshold remedial issue before the Court.
Doctrinal impact
Cases affected by this decision
Reaffirms Grupo Mexicano de Desarrollo, S.A. v. Alliance Bond Fund, Inc. (527 U.S. 308)
Reaffirmed as the governing test requiring equitable remedies to have a founding-era historical antecedent.