Federal judge blocks Trump mail voting order nationwide, ruling executive branch cannot regulate elections

Court expands injunction to all 50 states

U.S. District Court Judge Indira Talwani in Boston ruled on August 11 that the U.S. Postal Service may not implement any part of President Donald Trump's executive order tightening mail-in voting rules for the 2026 midterm elections. The ruling expands a previous injunction she issued on June 25, which had blocked the order's core provisions in 23 mostly Democratic-led states. The new preliminary injunction, granted in a lawsuit brought by the League of Women Voters and other voting rights groups, extends the prohibition nationwide to all 50 states. Talwani, nominated by Democratic President Barack Obama, wrote that the administration has so far declined to defend the constitutionality of the executive order.

Executive branch has no authority to regulate elections

Talwani's ruling rested on a constitutional separation-of-powers argument. She wrote that election regulation falls to states and Congress, not the president.

“The executive branch has no authority to regulate elections.”

She also emphasized the proximity of the November 3 vote, noting that less than 90 days remain before the midterms.

“That it is now less than 90 days before the November 3, 2026 midterm elections underscores the critical need for an injunction to prevent Defendants from changing election rules on the eve of the election.”

The judge said Trump's order would sow confusion and risk chaos, leaving insufficient time to educate voters on how the new restrictions would affect them.

What the order sought to do

Trump signed the executive order in late March, his second attempt to set national election rules by decree. The order directed USPS to deliver mail ballots only to individuals listed on voter rolls created by the states. If states did not comply with the new requirements, USPS would have refused to deliver the ballots. This would have transformed the Postal Service from a delivery agency into a gatekeeper in the election process. Trump has justified the changes as a measure to prevent alleged election fraud, while critics suspect the motive is to disadvantage Democratic-leaning voters who use mail voting at higher rates.

Supreme Court intervention requested

The Trump administration has already escalated the legal fight to the Supreme Court. In late July, the Justice Department filed an emergency request asking the justices to halt the lower court decisions that have blocked the sweeping changes in nearly half the country. Tuesday's ruling creates an additional legal hurdle the administration must overcome even if it secures relief from the Supreme Court on the earlier injunction. In motions to dismiss the lawsuits, the administration argued that the plaintiffs lacked standing, that the challenges were premature, and that the plaintiffs had no valid claim under the Administrative Procedure Act. Stephen Pezzi, a lawyer for the Trump administration, said the harms the plaintiffs referenced were subjective because much can change before the election.

Stakes for control of Congress

The November 3 midterms will decide control of both chambers of Congress. The entire House of Representatives and roughly one-third of the Senate are up for election. Republicans hold narrow majorities in both chambers, meaning individual seats could determine whether Democrats can block central elements of Trump's legislative agenda. The legal battle over mail voting comes amid broader Republican efforts to tighten election procedures, including a proposed law requiring proof of citizenship to vote, even though audits since 2020 have found no evidence of widespread mail ballot fraud. The Supreme Court's response to the administration's emergency request has not yet been issued.