Plain-English summary
Court vacates Ninth Circuit judgment and remands case about the "Remain in Mexico" immigration policy
The Supreme Court decided the government’s petition about the Migrant Protection Protocols (MPP), commonly called "Remain in Mexico," by granting the government’s motion to vacate the Ninth Circuit’s judgment and remanding the case. The Court did not issue a final substantive ruling on the full set of legal questions originally presented.
Why this matters
The decision affects how lower courts treat prior rulings on MPP and signals that changes in government policy can moot ongoing litigation and lead to vacatur of earlier appellate judgments. It also leaves unresolved important legal questions about the executive branch’s authority to send asylum seekers to Mexico, the interaction of that practice with U.S. and international non-refoulement obligations, and when formal rulemaking is required.
Who may feel it
- Asylum seekers and migrants arriving at the southern U.S. border
- Immigration lawyers, advocates, and nonprofit groups who litigate asylum policies
- Federal agencies (DHS, CBP, ICE) that implement immigration procedures
- State and local governments dealing with immigration enforcement and services
- Courts that may rely on or face challenges to prior appellate rulings about MPP
Key questions