Supreme Court Clears Way for Trump Mail-Voting Order Ahead of 2026 Midterms

President Donald J. Trump scored a major legal victory Monday as the Supreme Court allowed his administration to move forward with new mail-voting requirements ahead of November’s midterm elections, temporarily lifting a lower-court injunction that had blocked the policy.

The court’s six conservative justices sided with the administration, while the three liberal justices dissented. The decision allows key portions of Trump’s election-integrity executive order to take effect while litigation over the policy continues.

Trump’s order directs the Department of Homeland Security and Social Security Administration to help create federal lists used to verify voters receiving ballots through the mail. States using mail voting would provide information needed for the verification system, while the U.S. Postal Service would play a significant role in administering the new requirements.

Under the administration’s plan, mail ballots would include uniquely serialized barcodes, and states would provide voter information to USPS. The system is intended to determine whether individuals receiving mail ballots appear on the relevant voter lists before those ballots move through the mail system.

The legal battle was brought by a coalition that includes California, Massachusetts, New York, New Jersey, Michigan and numerous other Democratic-led states, along with Pennsylvania Gov. Josh Shapiro. In total, 23 states and the District of Columbia joined the challenge.

The states argued that Trump was improperly attempting to insert the executive branch into an area of election administration constitutionally assigned primarily to states and Congress. They also warned that implementing a new federal verification system shortly before the midterms could create confusion for election officials and voters.

A federal district court agreed with the challengers and blocked the government from implementing the contested portions of the order. The administration appealed, arguing in part that the states lacked standing because the injuries they claimed they would suffer were too speculative.

The Supreme Court agreed with the administration on that threshold issue. In its unsigned order, the majority said the federal government was likely to succeed on its argument that the states lacked standing and therefore granted the administration’s request to stay the injunction while the appeal proceeds.

Importantly, the Supreme Court did not issue a final ruling declaring Trump’s mail-voting policy constitutional. Monday’s decision concerns whether the lower-court injunction should remain in effect during litigation, meaning additional legal challenges to the administration’s authority remain possible.

The three liberal justices — Sonia Sotomayor, Elena Kagan and Ketanji Brown Jackson — dissented. Opponents of the policy argue that the federal requirements could interfere with established state election systems and potentially prevent eligible voters from receiving mail ballots because of errors or discrepancies in government databases.

Supporters contend the changes provide another safeguard for elections by ensuring mail ballots are distributed through a system backed by federal voter-verification information. The administration has characterized the executive order as part of its broader effort to strengthen election integrity.

The timing makes the ruling particularly significant. With the November midterms rapidly approaching, election administrators are already preparing ballots and voting systems, leaving relatively little time to adjust procedures to comply with new federal requirements.

The underlying constitutional fight is far from finished. But for now, the Supreme Court has handed Trump an important victory by removing the injunction that stood in the administration’s way, allowing its mail-voting initiative to move forward as Republicans and Democrats prepare for a consequential midterm election.