President Donald Trump signed an executive order on 31 March 2026 directing the Department of Homeland Security and the Social Security Administration to compile citizenship verification lists for every state 1. The order instructs the United States Postal Service to transmit mail ballots only to individuals appearing on state-specific participation lists. In practice, a voter absent from a federal database would not receive a ballot at all, regardless of their state registration status.
The enforcement mechanism is blunt. The Department of Justice is directed to "prioritise investigations and prosecutions of election officials and entities issuing ballots to ineligible voters" 2. Non-compliant states face federal funding cuts. County clerks processing routine ballots now face personal criminal exposure for doing so.
The constitutional conflict is immediate. US elections are administered by states, not the federal government. The Brennan Center for Justice characterised the order as exceeding presidential authority 3. Implementation faces a practical wall too: building accurate citizenship lists from federal databases for 160 million registered voters, then reconciling them with 50 separate state voter rolls, is an enormous data infrastructure project. Election administration experts consider it infeasible on this timeline, even absent litigation 4.
The chilling effect may matter more than implementation. Whether or not the EO is enforced, the DOJ directive changes the risk calculus for every county clerk in the country. Local officials must now weigh personal legal exposure against their statutory duty to deliver ballots.