Supreme Court Rejects Trump Mail Voting Limits

The U.S. Supreme Court on Monday declined to let the Trump administration’s new Postal Service restrictions on mail-in voting take effect for the November 2026 midterms, rejecting an emergency request to lift a lower-court injunction. In a brief, unsigned order, the Court found the government was “unlikely to succeed on the merits” and that the balance of equities did not favor emergency relief — delivering a significant legal defeat to the White House just weeks before Election Day.

The ruling means mail voting will largely proceed as it has for years, with the U.S. Postal Service expected to continue delivering ballots as usual. Voting by mail had already begun in states including Alabama, North Carolina and Wisconsin, with more — such as Hawaii, Oregon and Washington, where elections are run primarily or entirely by mail — set to follow.

How the Dispute Arose

The legal battle stems from an executive order President Donald Trump signed on March 31, 2026, directing the USPS to restrict mail ballot delivery and requiring federal records to be used to flag ineligible voters. In late August, the Postal Service published a 95-page final rule that would have required states to adopt uniform ballot envelope designs with unique barcodes, submit lists of eligible voters to an online federal portal, and cede to the USPS the power to refuse delivery of ballots that did not comply.

As The Guardian reported, voting rights groups joined by 23 states and the District of Columbia sued, arguing the Constitution gives the president no authority to set rules governing elections. Lower courts agreed. U.S. District Judge Indira Talwani issued a preliminary injunction in the Boston-based League of Women Voters case, finding the plan likely illegal because the Postal Service has no delegated authority from Congress to regulate election mail.

“The court is unaware of, and no party has proffered, any delegation Congress has made that would permit the USPS to regulate election mail,” Talwani wrote. A second federal judge issued another injunction in a separate case late Sunday.

A prior injunction issued by Talwani had been overturned on procedural grounds in July, then reinstated after the Postal Service posted its final rule. Monday’s order upholds the injunction once more.

A Split Court

Justice Brett Kavanaugh, a Trump appointee, filed a concurrence that left the door open to the policy in future elections. While he wrote there is “at least a fair prospect that the final rule falls within the Postal Service’s statutory authority,” he concluded that applying it to the 2026 elections “would be arbitrary and capricious in violation of the Administrative Procedure Act because state and local election officials do not have sufficient time to reasonably implement the rule before the elections.”

Justices Samuel Alito and Clarence Thomas dissented. Alito argued that the plaintiff states should not benefit from a timeline delayed by their own litigation, writing that they “cannot claim the timing of the rule tilts the equities in their favor when they, and courts hearing their claims, are responsible for so much of the delay.”

Notably, several Republican state election officials — including from the largely vote-by-mail state of Utah — filed a Supreme Court brief warning that implementing the plan so close to the election would “almost certainly lead to mistakes, delays, and confusion” for voters and administrators alike, according to the network.

Warnings of Chaos

The ruling followed mounting warnings that the Postal Service’s new system was unprepared. A whistleblower disclosure publicized by Sen. Richard Blumenthal in early September described the process as “secretive, rushed, chaotic, and fundamentally flawed,” cautioning that a single barcode error under an unusual “zero-percent failure” policy could cause entire batches of ballots to be rejected — potentially preventing millions of voters from receiving their ballots.

The Postal Service said at the time it was “carefully reviewing” the concerns. Postmaster General David Steiner had previously defended the agency’s efforts as nonpartisan, saying that “regardless of political party or perspective, we share a common goal: ensuring that Americans can have confidence that their election mail will be handled securely and delivered reliably.”

Voting-rights advocates welcomed Monday’s decision. “Today, the Supreme Court refused to allow the federal government to throw our elections into chaos just weeks before Election Day,” said Celina Stewart, CEO of the League of Women Voters. “The Postal Service exists to deliver Americans’ mail — not to rewrite election rules, demand voters’ personal information, or decide which ballots make it through the system.”

Samantha Tarazi, co-founder and CEO of the Voting Rights Lab, called the ruling “a massive sigh of relief for local election officials and voters,” while warning that the administration “will keep testing every avenue to manipulate our elections.”

Trump Responds

In a social media post on Tuesday, Trump blasted the ruling as “a big loss for Republicans,” adding that the justices are “merely a shell of their original selves.” He praised Alito and Thomas as “legends” and repeated his unsubstantiated claim that mail voting is a “disaster.”

The administration provided no evidence of mail-voting fraud in the litigation. Multiple studies and audits show that both mail-voting fraud and noncitizen voting are extremely rare; the Brookings Institution estimates roughly four cases of fraud per 10 million mailed votes.

Trump has long criticized mail voting, falsely blaming his 2020 loss on it, even as he has voted by mail himself — including in Florida this year. About one-third of U.S. voters cast ballots by mail, and eight states plus the District of Columbia conduct elections primarily or entirely by mail.

What’s Next

The Court’s order did not resolve the ultimate question of whether the USPS plan is lawful, and the legal fight is widely expected to continue over how the agency might try to implement such a rule for future federal elections. Kavanaugh’s concurrence — signaling openness to the policy’s merits — offers the administration a potential path in later cases.

For now, the practical effect is clear: the 2026 midterms will proceed under the same mail-voting processes states have used for years. As Al Jazeera noted, the decision halts the possibility of last-minute legal upheaval as voting gets underway across the country.

New York Attorney General Letitia James, whose state was among the plaintiffs, urged voters to act. “We will keep fighting to make sure every eligible ballot is counted come November,” she said. “Now, I encourage all eligible Americans to get out and vote — and vote early.”