Mail-In Voting & Election Security: Concerns Over Polling Access & ICE Presence

President Trump signed an executive order on March 31, 2026, seeking to establish federal controls over mail-in voting and create a verified list of eligible voters across the United States. The directive instructs the U.S. Postal Service to send mail ballots only to verified voters and requires federal agencies to compile lists of individuals who meet voting eligibility requirements. The move has prompted immediate legal challenges from state officials who argue the order infringes on constitutional rights reserved for states to administer elections.

The executive order directs the United States Postal Service to take control of mail balloting by designing new envelopes with special bar codes. These measures are intended to allow the federal government to ensure that ballots go out only to eligible voters and that only eligible voters return them. States are required to submit to the USPS process if they plan to use the federal mail system for sending or receiving ballots. States must submit lists of eligible voters in advance of such ballots passing through the mail system.

California leaders vowed to fight the order in court, stating that it infringes on the state’s constitutional right to administer elections as it sees fit. Officials in California described mail ballots as a safe and secure method for voting relied on by millions of residents. They characterized the executive order as an “illegal power grab” ahead of midterm elections in which the president’s party is poised to suffer substantial losses.

Arizona Secretary of State Adrian Fontes issued a statement condemning the directive. Fontes said, “This Executive Order is a disgusting overreach from the federal government and shows how little the Trump Administration understands about election administration.” He added that Arizona would not let the order stand without a fight and would meet the federal government in court. Arizona is among more than two dozen states the Trump administration’s Department of Justice has sued over access to sensitive voter data.

Officials in Oregon also pledged legal action against the federal government. Reports indicate that Oregon vows to sue Trump for the executive order restricting mail-in votes. The coordination among multiple states suggests a broad legal battle over federal authority in election administration is imminent following the signing of the order.

Election experts have stated that the order is unconstitutional. The Constitution says the “Times, Places and Manner” of federal elections are determined by individual states, with Congress able to enact changes. A previous executive order on elections, signed about a year prior to March 31, 2026, was blocked by federal judges who said the president lacked the constitutional authority to set voting policy.

Parallel to the executive order, discussions have emerged regarding the deployment of federal immigration agents to polling sites. Ahead of the 2026 midterms, Trump administration allies have floated the possibility that federal immigration agents could interfere at polling sites this fall. Longtime Trump supporter Steve Bannon said last week that the deployment of ICE agents to airports is “perfect training for the fall of 2026.”

Oklahoma Sen. Markwayne Mullin said during his confirmation hearing to lead the Department of Homeland Security that ICE could be sent to polling places in the event of a “specific threat.” Deputy Attorney General Todd Blanche appeared to back the idea of sending Immigration and Customs Enforcement officers to polling places. Blanche asked, “Why is there an objection to sending ICE to …”

Legal experts assert that sending ICE or any other armed federal agents to the polls is illegal. Federal law bans federal officers from interfering in elections. It is also illegal because federal law bans troops and armed federal agents from being deployed anywhere an “election is held.” While that law was passed in 1865, in today’s elections, that means wherever votes are cast and counted, including polling places, vote-counting facilities, and drop boxes.

The White House and a top DHS official previously said You’ll see no plans to deploy ICE agents to polling sites. However, assurances do little to ease concerns over voter intimidation and chilling voter turnout because of persistent calls from administration allies. Part of the push to deploy ICE agents to polling sites stems from the administration’s insistence, without evidence, that noncitizens are voting in droves.

Noncitizen voting is already illegal and vanishingly rare, and states have multiple checks in place that ensure only American citizens vote. If any voter, election official, or election worker is intimidated during an election, they can go to court to protect their rights. Courts have processes to rule quickly to prevent election disruptions or voter intimidation.

The Justice Department plans to share sensitive voter data with Homeland Security. The Trump administration claims it needs the data to enforce states’ voter list maintenance. Voting rights advocates and Democratic state officials quickly pledged to sue to block the order from going into effect following the announcement on March 31, 2026. Trump told reporters in the Oval Office that he believes the order is legally “foolproof,” despite the constitutional challenges raised by state officials and legal experts.