In a recent decision, the US Supreme Court denied the Department of Justice’s request to stay a preliminary injunction that blocks the United States Postal Service from implementing a contested mail-in ballot regulation ahead of the upcoming midterm elections. The rule, part of a March 2026 executive order by former President Donald Trump, requires states using USPS for election mail to adopt specific envelope designs, use individualized barcodes for each voter, and upload voter rosters to a USPS portal before any mail delivery.
The Supreme Court, in United States Postal Service v. California, expressed skepticism about the federal government’s likelihood of prevailing in the underlying legal challenge. Justice Brett Kavanaugh, in a concurring opinion, noted that while the regulation might fall within the Postal Service’s authority, implementing the rule for the 2026 elections is impractical and possibly arbitrary under the Administrative Procedure Act due to the limited time available for state and local officials to comply.
This decision follows a September 4 ruling by US District Judge Indira Talwani in Massachusetts, which initially blocked the regulation. The appeals process saw further reinforcement when the US Court of Appeals for the First Circuit upheld the injunction, highlighting that the administration had not sufficiently justified its request to stay the implementation.
Justice Samuel Alito, joined by Justice Clarence Thomas, dissented, arguing that the Postal Service possesses expansive authority to regulate federal mail usage and criticized the likelihood of success claimed by challengers. Alito emphasized that while the rule aims to enhance election mail visibility and fraud detection, the injunction disrupts federal objectives and causes significant harm.
This development contrasts with an earlier Supreme Court stance in August, which temporarily allowed the executive directive to stand, owing to reasons related to standing and ripeness as the Postmaster General had yet to issue a final ruling. The case illustrates ongoing tensions between federal regulatory efforts and state election administration concerns, as the nation prepares for consequential midterm elections.