Denver and Latino civil rights groups file a lawsuit challenging a Trump administration plan involving Immigration and Customs Enforcement (ICE) agents at polling places, arguing it violates a Civil War-era federal law. The suit is filed against Homeland Security Secretary Markwayne Mullin and the administration, seeking to stop any such deployment for the current election.

The groups cite 18 U.S. Code § 592, which prohibits armed forces from patrolling or otherwise entering polling locations. They argue that even limited ICE presence—such as serving warrants near polling sites or responding to a claimed “threat”— would interfere with election administration and could deter voters, particularly Latino voters. The Washington Post reports the legal claim as alleging that sending armed ICE agents to polling places would be a federal crime.

In describing the background, outlets note that the Trump administration denies plans to monitor voting booths, while Mullin says agents could still be allowed if serving a warrant or addressing threats. The New Republic also references reported federal-agent presence at polling places in other states, framing the lawsuit as part of broader election-related tensions. Across sources, the dispute centers on whether ICE involvement is compatible with federal restrictions and voters’ ability to vote without intimidation.