Supreme Court Blocks Changes to USPS Mail-In Ballot Handling Ahead of 2026 Midterms

The U.S. Supreme Court has denied a request from the Trump administration to implement new rules governing how the U.S. Postal Service processes mail-in ballots ahead of the 2026 midterm elections. In a 7-2 decision, the Court described the proposed changes as 'arbitrary and capricious,' with Justice Ketanji Brown Jackson writing that the administration was unlikely to succeed on the merits of its case.

The rejected executive order would have directed USPS to verify voter citizenship, validate ballot materials, and introduce a barcode tracking system for mail ballot envelopes, cross-referenced against 'State Citizenship Lists' compiled by the Department of Homeland Security. In a concurring statement, Justice Brett Kavanaugh acknowledged the administration might eventually have legal authority to pursue such a regulation, but said the short timeline given to state and local election officials made it unworkable before the 2026 elections.

The order had already been challenged by multiple states and voting rights groups, who argued the executive branch lacked constitutional authority to dictate how states maintain their voter rolls. Lower courts agreed and blocked the order from taking effect, and this Supreme Court decision was the administration's final avenue for emergency relief before the midterms.