A coalition of 23 states and the District of Columbia filed a lawsuit in Boston federal court on Wednesday to block new U.S. Postal Service (USPS) regulations regarding mail-in ballots. The legal challenge seeks to prevent the implementation of requirements established by an executive order signed by President Donald Trump in March. The lawsuit was filed two days after the U.S. Supreme Court lifted a previous injunction against the order, ruling that the initial challenge was premature because the USPS had not yet finalized its implementation rules.
The USPS released its final rule on Friday, which formalizes the requirements of the presidential order. Previously, a federal judge had kept a block in place through a separate case brought by voting rights groups. However, U.S. District Judge Indira Talwani vacated that order shortly after the states filed their new lawsuit, citing the Supreme Court's determination that the earlier litigation was premature. The new rule requires states to provide the USPS with lists of voters requesting mail-in ballots and mandates that ballot envelopes feature unique barcodes for agency verification.
Attorneys general from states including California, Massachusetts, and New York argue that the USPS lacks the authority to set federal eligibility standards for mail-in voting. New York Attorney General Letitia James stated that the policy would create "unnecessary costs" and "risks for voters." The coalition contends the rule violates federal voter protection laws and state constitutional authority to manage elections. The USPS did not respond to requests for comment regarding the litigation.
For state election offices and taxpayers, the concrete day-to-day impact includes the immediate requirement to purchase new specialized envelopes and processing equipment to accommodate the unique barcode mandate. State officials reported that they would also need to establish new data-sharing systems to provide voter lists to the USPS and initiate rapid training for staff just weeks before ballots are mailed. These changes would likely be noticed by voters in the form of updated ballot envelope designs and potential changes to how their registration status is verified by the postal service.
The legal proceedings set a precedent regarding the balance of power between the executive branch's control over the postal service and the states' constitutional right to administer elections. If the rule stands, it establishes a new federal role in verifying the eligibility of mail-in voters, a process traditionally managed at the state and local levels. Further developments are expected as Judge Talwani considers the request to re-block the rule, while similar filings from voting rights groups and Democratic Party organizations remain pending in separate court cases.