Supreme Court Pauses USPS Mail-Voting Rule Ahead of Midterms
On September 14, 2026, the U.S. Supreme Court refused to let the U.S. Postal Service enforce parts of a new mail-in voting rule before the 2026 midterms. The case was Postal Service v. California, No. 26A305. The administration had sought emergency relief to use parts of the rule while lower-court challenges continued. Supreme Court opinion
Only two justices dissented. Justices Samuel Alito and Clarence Thomas dissented from the denial. Justices Amy Coney Barrett and Neil Gorsuch, both nominated by Trump, did not dissent. Justice Brett Kavanaugh wrote a concurring opinion, meaning he agreed with the result but gave his own reasons.
The Postal Service published the rule on August 26, 2026, as "Ballot Mail for Federal Elections." It required ballot envelopes to bear an election-mail logo and to be scannable by machines. SCOTUSblog
The rule traced to presidential action in March. On March 31, 2026, President Donald Trump issued an executive order titled "Ensuring Citizenship Verification and Integrity in Federal Elections." It required the Postal Service to transmit ballots only to people on a state-specific Mail-in and Absentee Participation List, essentially a state-by-state roster of approved mail voters. White House fact sheet
Under the plan described in the litigation, the Postal Service would have been forbidden from delivering mailed ballots to voters the administration deemed ineligible. The Department of Homeland Security, working with the Social Security Administration, would have devised a list of supposedly ineligible, noncitizen voters. Almost a third of Americans vote by mail, so any postal change would have national reach. Guardian
Lower courts had already intervened. An appeals court declined to pause an injunction, a court order that stops a rule from taking effect, preventing tighter postal voting rules. On September 14, 2026, a second federal judge blocked the administration from implementing the new rule.
North Carolina and Alabama were set to begin sending ballots to voters before September 10, 2026, with the earliest start on September 4. Alabama, North Carolina and Wisconsin had already begun mailing ballots before the Supreme Court ruled.
A Postal Service whistleblower told Congress in early September 2026 that the agency lacked the ability to safely implement the restriction system. Senator Richard Blumenthal, who handled the complaint, described the plan as 'perilously rushed and potentially unlawful'.
Trump posted on Truth Social calling mailed ballots 'corrupt and out of control' and criticizing conservative justices who voted against him. Trump has attributed his 2020 loss to Joe Biden to fraud through mailed ballots. Supporters of mail voting rallied outside the U.S. Capitol in Washington, D.C., on September 15, 2026. Separately, six green card holders in Texas were charged as part of a federal crackdown on illegal voting.
The broader context here is a collision of election administration, postal logistics and judicial timing. The administration sought to condition delivery on a federally assembled eligibility list, applied through state-specific lists and machine-readable envelopes. Opponents obtained injunctions before ballots moved, and the Court faced an emergency request while some ballots were already in voters' hands. The split, with two Trump appointees declining to join the dissent and Kavanaugh writing separately, points to disagreement not only over mail voting but over when federal rules can be imposed in an election already underway.
Looking ahead to the midterms, the immediate question is procedural rather than final. The denial leaves the lower-court blocks in place for now. It does not resolve the underlying claims about citizenship verification, postal authority or state control of voter lists. With ballots already mailed in at least three states and further challenges possible, election officials, postal managers and litigants face parallel tracks of administration and adjudication past September 14.
