Supreme Court Blocks Trump‑Backed Postal Rule, Keeping Mail‑In Ballots Open

The highest court in the land stepped in on September 14, 2026, and said “no” to the Justice Department’s request that the U.S. Postal Service be allowed to tighten the rules around mail‑in ballots. It was a clear setback for President Donald Trump’s push to curb voting by mail before the looming midterm elections.

What actually happened was that the Court declined to lift a preliminary injunction issued by U.S. District Judge Indira Talwani in Boston. Talwani had already blocked the Postal Service from rolling out the new measure, which was birthed from a March executive order signed by Trump to make mail voting “more secure.” The Court’s brief‑sized order, essentially a one‑paragraph note, summed it up: the government’s chances of winning on the merits look slim.

Justice Samuel Alito, joined by fellow conservative Clarence Thomas, wrote a dissent – and did so with a little sports flair. He likened the challengers’ arguments to a “Hail Mary pass” that was “unlikely to be successfully completed.” Alito reminded everyone that the Postal Service does have broad authority to regulate the mail, but that didn’t sway the majority.

No other Justice offered a public dissent, leaving the 6‑3 conservative majority in control of the decision. The timing couldn’t be more critical: Republicans are locked in a tight battle for Congress, and many analysts say limiting mail‑in ballots would help them, since Democratic voters tend to rely on absentee voting at higher rates.

Adding to the legal tangle, another federal judge, Carl Nichols in Washington, D.C., has also put the brakes on similar restrictions, reinforcing the message that the rule faces an uphill fight in the courts.

So, for now, voters can keep sending their ballots through the mailbox without fearing a new set of hurdles. Whether the rule resurfaces later remains to be seen, but the Supreme Court has given it a solid pause – a win for mail‑in voting advocates and, arguably, a loss for Trump’s electoral strategy.