Supreme Court blocks Trump's mail-in ballot restrictions ahead of midterms

The Supreme Court has blocked President Trump's attempt to impose new restrictions on mail-in voting ahead of November's midterm elections, dealing a significant blow to the White House's effort to reshape how Americans cast ballots by post.

In March, Trump signed an executive order directing the US Postal Service to implement stricter requirements for postal ballots. The order called for unique barcodes on ballot envelopes and required state and local election officials to feed information about mail-ballot recipients into an online federal portal. Trump framed the measures as necessary safeguards against electoral fraud, a concern he has repeatedly raised despite lacking evidence of widespread fraud in mail voting. The administration argued that the Postal Service, granted broad regulatory authority by Congress, had the power to impose these rules without state approval.

Twenty-three states and Washington DC sued to block the order, contending it violated their constitutional right to administer elections. The postal workers' union added a practical objection: clerks could not be adequately trained to implement the new procedures before the election. In early September, federal Judge Indira Talwani imposed a temporary injunction blocking Trump's order, ruling that implementing such measures so close to the November elections risked disenfranchising voters. An appeals court subsequently refused to lift her order, and another federal judge, Carl Nichols, also ruled against the administration.

When the Supreme Court took up the case, the justices upheld Talwani's temporary block. The decision was not unanimous. Conservative Justice Brett Kavanaugh sided with the majority but wrote separately to signal that his position might shift as the litigation continues. He acknowledged there was "at least a fair prospect" that the final rule fell within the Postal Service's authority, but concluded that applying it during the 2026 elections would be "arbitrary and capricious." Justices Samuel Alito and Clarence Thomas dissented, arguing that the challenge to Trump's order amounted to a "Hail Mary pass" unlikely to succeed and that the Postal Service clearly possessed the authority to regulate the mail.

The ruling amounts to a temporary reprieve rather than a final resolution. Kavanaugh's hedged language suggests the case could return to the Supreme Court as litigation proceeds, potentially with a different outcome once the immediate pressure of the election cycle has passed. The White House did not immediately respond to the decision.

The stakes are substantial. Approximately 30 percent of voters cast mail ballots in the general election two years ago, with Democrats comprising the majority of that group. Some states have already begun distributing mail-in ballots for the midterms, which will determine which party controls Congress. This is not Trump's first setback on mail voting before the high court. In June, the justices ruled that states may count ballots postmarked by election day, rejecting the administration's push to invalidate votes received after polls close.

The tension at the heart of the case reflects a broader dispute over federal versus state authority in elections. The Trump administration maintained that states cannot use the federal mail system for elections while claiming exemption from Postal Service rules. States countered that election administration is fundamentally their responsibility, and that federal interference threatens to undermine voting access. For now, the temporary block holds, and mail-in voting will proceed under existing rules. But with Kavanaugh's conditional support and two justices already aligned with the administration, the legal battle over postal ballots is far from over.