Trump Administration Seeks Supreme Court Relief on USPS Mail-In Ballot Rule

The Justice Department, represented by Solicitor General D. John Sauer, filed a third emergency petition with the U.S. Supreme Court in early September 2026 asking the Court to stay a preliminary injunction issued by U.S. District Judge Indira Talwani in Boston. The injunction blocks the U.S. Postal Service (USPS) from enforcing a new rule that would require states to upload voter-list data to a federal portal and to use USPS-approved envelope designs and barcodes for federal election ballots mailed through the United States Mail. The administration argues the rule is a lawful exercise of congressional authority delegated to the USPS; the states and voting-rights groups contend it infringes state constitutional authority over elections and could disenfranchise voters ahead of the midterm election.

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In March 2026 President Donald Trump signed an executive order directing federal agencies to tighten mail-in voting procedures. The order instructs the Department of Homeland Security to compile state-by-state lists of adult citizens, tasks the Attorney General with prioritizing prosecutions of officials who issue “Federal ballots” to ineligible voters, and requires states to provide the USPS with voter lists for mail-in ballots while prohibiting the USPS from mailing ballots to anyone not on those lists. The USPS responded with a final rule that imposes modest envelope-design and addressee-information requirements.

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• 48 million votes were cast by mail in the 2024 election, roughly one-third of all votes (States United Democracy Center).

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• North Carolina has begun mailing ballots. Alabama is scheduled to start on September 9, and at least five additional states are slated to begin the week of September 13.

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• Justice Ketanji Brown Jackson, who handles emergency appeals from the First Circuit, ordered the challengers to file their response by 4 p.m. EDT on September 9.

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Democratic-led states and civil-rights organizations have filed separate lawsuits arguing that the USPS rule intrudes on state constitutional authority and could delay ballot delivery. They note that the required voter-list portal is not yet operational, creating uncertainty for election officials facing tight mailing deadlines.

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Legal analysts differ on the rule’s practical impact. Neither source provides definitive evidence on how the envelope-design specifications will affect ballot delivery, leaving the ultimate effect unresolved.

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• “Once those ballot envelopes enter the mailstream, there is no retrieving them,” — General D. John Sauer

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• “Ballots have already begun to be mailed in North Carolina, and more States will begin the mailing process as the injunction remains in place,” — Solicitor General John Sauer

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The Supreme Court must consider the administration’s request for a stay and the states’ response by the deadline set for September 9. A decision before the midterm election could determine whether the USPS rule will be enforced for the upcoming contests.

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