In a ruling hailed by democracy defenders, a federal court on Wednesday halted the US Postal Service's implementation of President Donald Trump's March executive order targeting mail-in ballots as part of his administration's broader attack on voting rights.Judge Emmet Sullivan of the US District Court for the District of Columbia granted a request by the NAACP to enforce a 2021 settlement agreement requiring the USPS to protect mail-in voting and prioritize delivery of mail related to elections through 2028.The request followed the Postal Service's publication last month of a proposed rule that would block the delivery of mail-in ballots to voters in states where election officials refused to provide certain information to USPS or use a specific envelope design. That proposal came after Trump's March executive order directing federal agencies to create a nationwide list of eligible voters using federal data.The directive also requires the Postal Service to verify that mail-in ballots are sent and returned only by eligible voters, preserve election-related records for a longer period, and exercise heightened oversight of mailed ballots.The Public Citizen Litigation Group and Legal Defense Fund (LDF) filed a motion on behalf of the NAACP asserting that the proposed rule "manifests USPS’ intent not to deliver certain mail-in ballots, establishing a process that directly violates its obligations under the agreement."“The court today correctly recognized that USPS’ plan to create roadblocks to mail-in voting was inconsistent with its commitment to timely deliver election mail,” Public Citizen Litigation Group director Allison Zieve said in a statement following Sullivan's ruling. “USPS’ plan was unwise, unlawful, and a threat to the millions of voters who rely on mailed ballots to participate in our democracy.”LDF associate director-counsel Sam Spital said, “Today’s decision recognizes that USPS cannot disregard its legal obligation to timely deliver mail-in ballots to all voters.""We are glad that the court blocked a blatant attempt to renege on this commitment through a proposed rule that ran the risk of undermining the fairness of our national elections, creating particular dangers for Black voters," Spital continued. "LDF will continue to defend our democracy and combat unlawful restrictions of the right to vote.”Anthony P. Ashton, senior associate general counsel at the NAACP, called the decision "a critical step in protecting the rights of voters who rely on the timely delivery of mail-in ballots to participate in our democracy."Ashton continued:The proposed USPS changes would have created unnecessary and unlawful barriers, in direct violation of the USPS’ mandate to prioritize election mail. Those barriers could have disproportionately harmed Black voters, who are more likely to rely on mail voting due to long-standing inequities in access. Put simply, the use of mail-in voting helps reduce voter intimidation at the polls and election day dirty tricks. This decision makes clear that access to the ballot cannot be tied to arbitrary requirements. The NAACP will continue to hold this government accountable when it attempts to undermine fair and equal access to the electoral process.Wednesday's order—from a judge who's been appointed to various positions by Republican and Democratic presidents throughout his career—is the latest in a string of federal court rulings against Trump's attacks on voting rights, crowned by Monday's Watson v. Republican National Committee US Supreme Court decision, in which the justices affirmed that states may count ballots received after Election Day if they were postmarked in time.Last week, a federal judge in Massachusetts sided with Democratic state attorneys who challenged Trump's March 2025 executive order that requires Americans to show proof of citizenship when registering to vote, while another judge in the same district blocked parts of the president's March 2026 order, which included the USPS directive.