Democratic-led states sue again over Trump mail-voting restrictions as new USPS rule triggers constitutional showdown before midterms
BOSTON/WASHINGTON — Democratic-led states returned to federal court on Wednesday seeking to stop the Trump administration's new restrictions on mail voting, just two days after the Supreme Court handed President Donald Trump a procedural victory in the same broader dispute. Attorneys general from 23 states and the District of Columbia, joined by Pennsylvania Governor Josh Shapiro, filed a new lawsuit in Boston challenging a final U.S. Postal Service rule implementing Trump's March executive order, arguing that the federal government is attempting to take authority over mail-ballot administration that belongs principally to states and Congress. The administration says the changes are common-sense election-security measures. The crucial difference from the lawsuit the Supreme Court halted Monday is timing: when the states first sued, the justices said they had acted before the administration had taken concrete implementation steps; USPS has now issued the rule the states had warned was coming.
The new Postal Service rule would require states seeking USPS delivery of mail ballots to submit lists of eligible mail voters and obtain federal approval for ballot-envelope designs. The states' complaint argues that the Postal Service would effectively be placed between state election officials and voters, potentially allowing a federal agency to reject or interfere with election mail based on requirements created under Trump's executive order. California Attorney General Rob Bonta, one of the officials leading the litigation, argues that USPS lacks legal authority to determine who may receive a mail ballot and that implementing the requirements so close to November could disrupt election systems that are already substantially prepared. Those are allegations being tested in court; the administration maintains that its measures are intended to strengthen the security and integrity of mailed ballots.
The timing makes Wednesday's lawsuit particularly significant. The Supreme Court's 6-3 majority on Monday did not rule that Trump's executive order was constitutional. Instead, the court concluded that the states' original challenge was premature because the disputed provisions had not yet been implemented sufficiently to establish the injury necessary for their claims. The unsigned opinion stayed a June injunction issued by U.S. District Judge Indira Talwani that had prevented the administration from applying key portions of the order to the states involved in the litigation. The three liberal justices dissented.
That distinction now sits at the center of the states' strategy. The Postal Service published its final rule after the original litigation began, giving the states a concrete federal action to challenge rather than a future policy they predicted would eventually harm their election systems. Reuters reported that the new lawsuit was filed specifically after USPS finalized its requirements, while California's complaint runs more than 500 pages and sets out detailed claims about how the rule would interact with individual state election systems. In effect, the states are attempting to cure precisely the procedural weakness the Supreme Court identified two days earlier.
The dispute is consequently moving rapidly from an argument about whether Trump might interfere with state election administration toward a much more consequential question: whether the federal government can actually impose these requirements before November's congressional elections. The Constitution gives state legislatures authority to prescribe the “Times, Places and Manner” of congressional elections while giving Congress power to alter those regulations. The states argue that this structure leaves the president without unilateral authority to redesign their mail-voting systems through an executive order. The administration counters that federal agencies can exercise powers already entrusted to them — including Postal Service operations and federal election-integrity responsibilities — to protect ballots and ensure that they reach eligible voters.
The practical conflict is almost as important as the constitutional one. States are already deep into election preparations, and the first major wave of mailed ballots is approaching. Election officials argue that changing envelope designs, voter-list procedures and postal requirements at this stage could force them to alter systems after ballots, databases, instructions and administrative processes have already been prepared. The administration argues that election security justifies the requirements and says it will continue working to implement them.
That makes the calendar an increasingly powerful factor in the litigation. Courts generally become cautious about ordering significant changes to election procedures immediately before voting, particularly when those changes risk confusing voters or election administrators. But both sides can invoke that concern here. States say the administration is introducing disruptive new requirements too late; the administration can argue that courts themselves should not prevent election-security measures from taking effect immediately before an election. Which side successfully characterizes the status quo could become important as judges consider emergency requests over the coming days.
Wednesday also produced another legal development that makes the situation unusually fluid. Judge Talwani lifted one major obstacle to Trump's order following the Supreme Court's ruling, even while describing aspects of the administration's approach as potentially unconstitutional and disruptive. Other litigation remains active, including challenges brought by voting-rights organizations and national Democratic groups. The result is not a single lawsuit moving neatly toward one final judgment but several overlapping cases testing different portions of the executive order, the Postal Service's implementation and the federal government's constitutional authority.
The Postal Service occupies an especially unusual position in that confrontation. USPS normally transports election mail under rules established by states and local jurisdictions; Trump's order would give it a substantially more active role by tying delivery of certain ballots to federally required voter information. The states argue that this transforms the agency from carrier into election gatekeeper. The White House describes the measures differently, saying the Postal Service requirements are safeguards designed to protect mail-ballot security. USPS declined to comment on the new litigation because the matter is before the courts.
The underlying political dispute over mail voting remains deeply polarized. Trump has repeatedly questioned voting by mail and has promoted tighter federal election rules, while Democratic officials argue that his proposals would restrict lawful voting and improperly federalize election administration. Mail voting itself is legal throughout the United States under rules that vary significantly by jurisdiction, and large numbers of military personnel, overseas citizens, elderly voters and others rely on absentee ballots. The legal question before the courts is therefore not whether mail voting can exist, but how much authority the executive branch can exercise over the machinery states use to administer it.
For the White House, Monday's Supreme Court decision remains an important victory because it removed the injunction that had prevented significant parts of the executive order from advancing. But the decision also contained the seeds of Wednesday's renewed challenge. By concluding that the states had sued before the administration acted, rather than deciding that the president possessed the constitutional authority he claimed, the court left open the possibility of another lawsuit once implementation became concrete. California Attorney General Bonta explicitly signaled after Monday's decision that the coalition intended to challenge future implementation measures as they occurred. Two days later, that is exactly what the coalition has done.
The administration could therefore eventually return to the Supreme Court facing a substantially different legal question. Monday's case asked whether states could block an executive order before its implementation produced sufficient injury. A later case could require the justices to confront the underlying merits: whether the president and Postal Service actually possess the statutory and constitutional authority to impose nationwide conditions on state mail-ballot systems. Nothing in Monday's ruling conclusively answered that question.
That distinction is essential because the public headline — Supreme Court sides with Trump — can easily create the impression that the legality of his mail-voting policy has already been settled. It has not. The Supreme Court granted emergency relief on procedural grounds, USPS then issued concrete regulations, and states have now constructed a new lawsuit around those regulations. What looked Monday like a Trump victory may therefore prove to have been the opening procedural round of a much larger constitutional confrontation.
The rapidly approaching midterms increase the stakes further. Republicans and Democrats are fighting for control of Congress, and any dispute affecting how mailed ballots are distributed or processed could become politically explosive even without evidence that the eventual rules systematically advantage one party. Election administrators need clarity before ballots move through the postal system; courts simultaneously need enough time to consider complex constitutional and administrative-law questions. Those two clocks are now running against each other.
Wednesday's lawsuit therefore marks a significant evolution in the case. The first battle was about whether Democratic-led states sued too early. The second is about what happened after the Trump administration actually moved forward. USPS has now produced the concrete rule that was missing from the first case, giving courts a new factual record and potentially forcing judges — and eventually the Supreme Court — closer to answering the question Monday's ruling avoided: Can a president use federal agencies to impose nationwide conditions on how states distribute mail ballots?