Supreme Court Blocks Trump Administration’s Mail-Ballot Rule Ahead of 2026 Midterms

On Monday, the U.S. Supreme Court issued an unsigned brief order refusing to lift a lower-court injunction that bars the United States Postal Service (USPS) from enforcing a new set of mail-ballot requirements proposed by the Trump administration.

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President Donald Trump issued an executive order in March directing the USPS to develop rules that would require states to submit lists of voters eligible for mail ballots, use a uniform envelope design with a unique barcode, and allow the USPS to refuse delivery of ballots that did not meet those specifications. The rule was finalized by the USPS weeks later, but several district judges—most notably U.S. District Judge Indira Talwani in Boston—issued preliminary injunctions, finding the rule likely unlawful because the Postal Service lacks authority over election administration. The administration appealed repeatedly, seeking emergency relief from the Supreme Court as states began mailing ballots.

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• Roughly one-third of the electorate—about 47 million voters in the 2024 cycle—casts ballots by mail.

NPR

• A coalition of 24 Democratic-led states and the District of Columbia, joined by the League of Women Voters, filed the challenge that led to the current injunction.

Democracy Docket

• The proposed rule would have required states to upload voter data to an online portal that was not yet operational and to replace already-purchased ballot envelopes.

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• The Justice Department argued the requirements were “modest” and within the Postal Service’s regulatory power, emphasizing a need for uniform enforcement to protect election integrity.

Supreme Court Rejects Trump’s Mail Ballot Curbs for Midterms (1)

• Conservative Justices Samuel Alito and Clarence Thomas dissented, asserting that the government has a strong interest in enforcing the rule and that the practical concerns raised by election officials were insufficient to block the policy.

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Democratic-led states and voting-rights groups contended that the rule unconstitutionally intrudes on state authority over elections and would cause “massive chaos” and disenfranchisement. Republican election officials from states such as Utah also warned that the rushed implementation could lead to “mistakes, delays, and confusion.” A USPS whistleblower said a single barcode error could cause an entire batch of ballots to be rejected.

CNN

Media accounts differ on the precise composition of the Court’s vote. Some outlets reported a 7-2 split, others described the decision as 6-1-2, while the order itself provided no vote count. The Supreme Court’s order does not resolve the underlying constitutional question, leaving the merits of the USPS rule unsettled for future litigation.

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• “The government has a strong interest in enforcing the rule, and implementing it will also ‘en­hance the visibility of Federal Ballot Mail’ in order to better detect election fraud,” — Conservative Justice Samuel Alito

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• “But applying the rule in the 2026 elections would be arbitrary and capricious in violation of the Administrative Procedure Act because state and local election officials do not have sufficient time to reasonably implement the rule before the elections,” — Justice Brett Kavanaugh

CNBC

The injunction remains in effect while the underlying lawsuit proceeds in federal court. The administration may seek a future ruling on the merits of the USPS rule, and the Supreme Court could be asked to revisit the issue if the lower courts issue a final judgment. State election officials will continue mailing ballots under existing procedures, and the legal battle is expected to extend beyond the November 2026 midterm elections.

Supreme Court Rejects Trump’s Mail Ballot Curbs for Midterms (1)