League of Women Voters of Massachusetts v. Trump — First Circuit refuses to pause injunction against USPS ballot-mail rule

Case
League of Women Voters of Massachusetts v. Trump
Court
U.S. Court of Appeals for the First Circuit
Judge
Gelpí; Rikelman; Aframe
Date Decided
September 10, 2026
Docket No.
26-2029, 26-2030, 26-2031, 26-2032
Topics
Election law; mail voting; Elections Clause; preliminary injunction
Source
Read the full opinion

Background

About a week before states were to begin mailing ballots for the November 3, 2026 federal election, USPS issued its “Ballot Mail for Federal Elections” Final Rule. The rule required voter-specific Intelligent Mail barcodes on outgoing and return ballot envelopes to match data uploaded to a USPS database before ballots would be delivered to voters.

States and voting organizations challenged the rule. They alleged that compliance would require new USPS-approved envelope designs, replacement envelopes, barcode-generation systems, and use of a USPS portal that was not yet operational. The district court preliminarily enjoined parts of the rule, finding it likely unlawful and likely to cause widespread voter disenfranchisement if implemented for the upcoming election.

The Court’s Holding

The First Circuit denied federal appellants’ and intervenor states’ motions to stay the preliminary injunction. It held that the appellants had not made a strong showing that the district court was likely wrong to conclude that the rule regulated the manner of holding congressional elections—an area assigned by the Elections Clause to the states and Congress, not USPS acting without congressional authorization.

General statutory authority for USPS to manage the postal system likely did not supply the requisite congressional authorization for this election-specific rule, the court said. The court also held that the equities did not support a stay: the record supported findings that immediate implementation was impracticable and could disenfranchise millions of mail voters, with minimal demonstrated anti-fraud benefit. It further concluded that the organizational plaintiffs had standing because the rule directly disrupted their voter-registration, translation, and voter-education services. USPS’s request for an administrative stay was denied as moot.

Key Takeaways

  • USPS did not show a sufficient likelihood that its ballot-mail rule was lawfully authorized under the Elections Clause.
  • The court credited findings that implementing the rule before the November 2026 election would create chaos and risk widespread disenfranchisement.
  • Voting organizations established organizational standing by showing disruption to core voter services, not merely advocacy expenses.

Why It Matters

The order leaves the preliminary injunction in place for the 2026 election and prevents the enjoined portions of the ballot-mail rule from taking immediate effect. It also emphasizes that a federal executive agency needs sufficiently specific congressional authorization before imposing requirements that regulate how states conduct federal elections.

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