24 States Sue to Block USPS Mail-In Voting Rule

A coalition of 24 Democratic-led states and the District of Columbia filed a lawsuit on Wednesday, August 26, 2026, seeking to block a new U.S. Postal Service rule that tightens regulations for mail-in voting ahead of the November midterm elections. The legal challenge, filed in federal court in Massachusetts, argues the rule exceeds executive authority, conflicts with federal law, and intrudes on states' constitutional power to administer elections. The lawsuit targets a final rule published by the Postal Service on August 22, 2026, which implements parts of an executive order President Donald Trump signed on March 31, 2026.