The U.S. Supreme Court ruled 6-3 Monday to lift a lower court injunction that had blocked key provisions of President Donald Trump's executive order on mail-in voting, allowing the administration to move forward with portions of the order while litigation continues. The conservative majority sided with the administration in an unsigned per curiam opinion, clearing the way for the Department of Homeland Security to compile a federal citizenship list and share it with states, authorizing the Attorney General to prioritize prosecution of state officials who issue ballots to ineligible voters, and permitting the U.S. Postal Service to proceed with rulemaking on mail ballot design standards.

The ruling does not address what legal experts describe as the most contentious element of the order — a requirement that the Postal Service verify the voting eligibility of each mail ballot recipient and withhold ballots from anyone not appearing on a government list — which remains blocked under a separate nationwide injunction. The court's majority wrote that the Democratic-led plaintiff states had not yet suffered concrete harm from the order and that the Massachusetts district judge who issued the injunction had acted prematurely, adding that the decision 'does not mean that any measure taken by the Government to implement the Order will necessarily be lawful.' The three liberal justices dissented, with Justice Ketanji Brown Jackson writing that the ruling 'needlessly injects chaos and uncertainty into the upcoming midterm elections,' while Justice Sonia Sotomayor, joined by Justice Elena Kagan, argued the dispute should be addressed immediately on its merits.

Trump signed the executive order in March, directing federal agencies to create a 'state citizenship list' of eligible voters and instructing the Postal Service to deliver mail ballots only to individuals on that list. Democratic officials in 23 states and the District of Columbia challenged the order in court, arguing that the U.S. Constitution grants authority over election administration to states and Congress, not the president. U.S. District Judge Indira Talwani of Massachusetts sided with the plaintiff states, ruling that Trump lacked authority to dictate how states run federal elections and questioning whether federal agencies could compile accurate citizenship rolls; an appeals court upheld her ruling before she later issued a second injunction with nationwide effect.

The USPS on Friday published a finalized rule requiring states to collect and report basic voter information attached to a unique barcode on every mail-in ballot, a change the Postal Service said would take effect immediately upon the Supreme Court lifting the injunction. The immediate practical impact on November's midterm elections remains uncertain, with many legal experts saying the ruling alone is unlikely to produce significant changes for voters in the short term. California Gov. Gavin Newsom announced his state would file a new legal challenge, and New York Attorney General Letitia James called the ruling 'a painful setback' while pledging it would not be the final word, signaling that court battles over the order are expected to continue through the election cycle.