Trump administration appeals judge's new mail-voting block, setting up possible second Supreme Court fight before midterms
WASHINGTON/BOSTON — The Trump administration appealed on Friday against a federal judge's latest order blocking key parts of its plan to impose new nationwide requirements on mail voting, accelerating a legal battle that could return to the Supreme Court with only weeks remaining before November's congressional elections. The administration challenged U.S. District Judge Indira Talwani's 14-day temporary restraining order at the 1st U.S. Circuit Court of Appeals, after the Boston judge prevented the U.S. Postal Service from enforcing core provisions of a final rule that could allow it to refuse to transmit some mail ballots unless states comply with new federal requirements.
The appeal is the latest turn in an unusually fast-moving sequence of court decisions. On Monday, the Supreme Court's 6-3 conservative majority lifted an earlier injunction against President Donald Trump's March executive order after concluding that Democratic-led states had challenged the administration too early, before federal agencies had taken final action implementing it. Critically, the justices did not decide whether Trump's mail-voting restrictions are constitutional or lawful. The court explicitly left open the possibility of another challenge once implementation produced a concrete threat of harm.
That concrete action now exists. The Postal Service issued its final Ballot Mail for Federal Elections rule on August 21, laying out requirements intended to implement Section 3 of Trump's Executive Order 14399. Under the rule, states must provide USPS with lists identifying voters receiving mail ballots, while outbound and return ballot envelopes must contain unique identifying barcodes and satisfy new design standards. The Postal Service could refuse to transmit ballots that fail to comply with the standards or are associated with voters who do not appear on the required lists.
The publication of that rule fundamentally changed the legal posture. After the Supreme Court said the previous challenge was premature, Democratic-led states and voting-rights organizations quickly returned to court arguing that the final USPS requirements now created precisely the concrete injury the justices said had previously been missing. Talwani agreed sufficiently to impose an emergency 14-day restraining order on Thursday, concluding that states faced immediate logistical and financial burdens and that voters could face widespread disenfranchisement if the rule were implemented weeks before the November 3 election.
Talwani said states would have little time to redesign ballot envelopes, obtain Postal Service approval, order new materials, modify election-management systems, train officials and upload voter information into a new federal portal before ballots begin going out. She also questioned the justification for imposing the restrictions, saying USPS had presented no evidence of mail-ballot fraud sufficient to support such a sweeping intervention. The judge concluded that the risk of eligible voters losing access to mail ballots outweighed the government's stated interest in addressing what she described as an unsubstantiated problem.
The administration and its Republican supporters frame the dispute differently. Trump has argued that stronger federal controls are needed to protect election integrity, while the White House described Monday's Supreme Court action as a victory for election security. The administration has maintained during earlier stages of the litigation that challenges were premature until agencies completed their implementation process. USPS itself says its final rule does not decide who is legally entitled to vote by mail and that states retain authority over eligibility; it describes the new voter lists and tracking requirements as mechanisms for detecting potential irregularities.
Opponents argue that the constitutional problem is more fundamental. The Constitution assigns the initial authority to establish the “Times, Places and Manner” of congressional elections to state legislatures while allowing Congress to alter those rules. Democrats and voting-rights organizations contend that this structure does not give the president or Postal Service independent authority to impose substantive nationwide election-administration requirements. Talwani has repeatedly found serious constitutional problems with the administration's approach, though those conclusions remain subject to appellate review.
The dispute has enormous practical stakes because mail voting is no longer a marginal feature of American elections. All 50 states permit some form of voting by mail; 29 allow voters to request a mail ballot without providing a specific excuse, while eight conduct elections entirely by mail. USPS processed nearly 100 million ballots during the 2024 election, and roughly 30% of American voters cast their ballots by mail, according to election data cited by Reuters.
Timing may now become almost as important as the constitutional arguments. Talwani's restraining order lasts 14 days, and she has scheduled a September 3 hearing to consider whether to replace it with a longer preliminary injunction. At the same time, the administration's appeal moves to the Boston-based 1st Circuit. Depending on how quickly that court acts, either side could seek emergency intervention from the Supreme Court while election administrators are already preparing and, in some jurisdictions, approaching the point when the first mail ballots must be distributed.
That creates an unusual legal loop. On Monday, the Supreme Court effectively said the states had sued before the government's policy had become concrete. USPS then finalized the policy. The states sued again based on that final rule. Talwani blocked it again. And now the administration is appealing again. The Supreme Court therefore could soon confront a fundamentally different question from the procedural issue it addressed only days ago: not whether the challenge came too early, but whether the federal government actually possesses the authority to impose these requirements.
The answer could have consequences well beyond the 2026 midterms. A ruling validating broad presidential or Postal Service authority over ballot transmission could alter the traditional balance among states, Congress and the executive branch in federal election administration. A ruling against the administration could establish a significant limit on presidential efforts to change election procedures without legislation from Congress. For now, however, neither outcome has occurred, and Monday's Supreme Court ruling should not be read as settling the constitutionality of Trump's policy.
The immediate battle is consequently becoming a race between two clocks: the judicial calendar and the election calendar. The administration wants the appeals court to remove Talwani's block quickly enough for USPS to implement its final rule for November. States and voting-rights groups argue that changing mail-ballot systems this close to an election itself creates an unacceptable risk of disenfranchisement. With the September 3 hearing approaching and ballots soon entering the mail, the courts may have only days — not months — to decide whether Trump's most consequential attempt yet to reshape mail voting can operate in the 2026 election.