Trahan Joins Over 250 Current & Former Members of Congress Urging Supreme Court to Block Trump’s Executive Order Limiting Mail Voting

Today, Congresswoman Lori Trahan (MA-03) joined a bipartisan effort to challenge President Donald Trump’s efforts to limit mail-in voting. The court filing questions the legality of Donald Trump’s Executive Order seeking to exert federal control over mail-in ballots ahead of the 2026 midterm elections. “As current and former legislators, amici took an oath to uphold and defend the Constitution of the United States—including its guarantee of the separation of powers. Amici have a particular interest in defending the institutional role of the Legislative Branch under Article I of the Constitution and in vindicating the long-settled principle that the Constitution commits ultimate regulatory authority over federal elections to Congress. The Constitution does not contemplate the Executive Branch acting unilaterally to assert power over federal elections. Yet that is what the Order and Final Rule do,” the lawmakers wrote . Te group, made up of a bipartisan, bicameral coalition of 261 lawmakers, filed an amicus brief to the Supreme Court of the United States in the matter of United States Postal Service, et al., v. State of California, et al., a lawsuit brought by a coalition of State Attorneys General against the U.S. Postal Service. The court case challenges a Final Rule issued by the USPS pursuant to Trump’s directive that imposes unconstitutional and unworkable restrictions on mail-in voting, including requiring states to provide a “citizenship verification list” and attempting to give USPS control over who can vote by mail. The amici also pointed to a recent federal court ruling blocking the USPS from implementing its newly finalized mail ballot rule for the midterm elections, saying the agency lacked the authority to implement the rule and that its actions are “substantively unconstitutional and contrary to law.” “The district court correctly concluded that Appellees are likely to succeed on the merits of their claims that USPS lacked authority to issue the Final Rule, that the Final Rule unconstitutionally imposes mail-ballot requirements on the States, and that the Final Rule unconstitutionally bars non-compliant State and local election officials from using the USPS to mail ballots at all,” the lawmakers continued. The group concluded by asserting states’ power to administer elections and Congress’s power to make or alter rules regulating elections, which the Supreme Court itself has described as an “override” authority. The president’s illegal incursion on this authority is an attempt to disenfranchise people who depend on mail-in ballots to vote. The lawmakers concluded : “The integrity of our constitutional system depends on each branch keeping to its assigned role. The Framers set up a two-part system that gave the States default authority to regulate federal elections subject to Congress’s authority to override the States. The Framers did not provide the President with any authority to interfere in that system, nor has Congress imbued the Executive Branch with any such authority by statute.” In the court filing, the amici curiae argue that Trump’s Executive Order 14399, “Ensuring Citizenship Verification and Integrity in Federal Elections,” violates the separation of powers and usurps congressional authorities outlined in Article I of the U.S. Constitution, which gives the states and Congress exclusive authority over election administration. One-third of Americans are expected to vote by mail in the upcoming midterm elections, a voting practice Donald Trump himself used as recently as August 2026, when the president voted in Florida’s Republican primary. Trahan has been a fierce voice against Donald Trump’s attack on mail-in voting. In 2025, s he led calls against the Safeguard American Voter Eligibility (SAVE) Act , which requires voters to provide a birth certificate, naturalization papers, or passport matching their current name to vote in a federal election. Since arriving to Congress, Trahan has championed legislation to make voting more accessible for all Americans, including co-sponsoring the John R. Lewis Voting Rights Advancement Act and securing House passage of proposals to enhance ballot access for the families of servicemembers and prohibit the agents of foreign governments from exercising influence over the drawing of new congressional districts. Click HERE to view the full brief. ###