By

Madeleine May

Investigative Producer

Madeleine May is an investigative producer at CBS News based in Washington, D.C. She previously covered politics for VICE News and reported on organized crime and corruption for OCCRP. She covers threats to democracy, disinformation, political violence, and extremism.

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Updated on: October 21, 2026 / 2:20 PM EDT / CBS News

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Armed and in uniform, federal agents from the Department of Homeland Security have been knocking on doors in several states to ask residents about their immigration status — and to inquire if they have registered to vote or cast votes in past elections, a CBS News Investigation has found.

The operation is part of an effort to root out potential noncitizen voters ahead of the midterms. DHS has alleged that there could be as many as 250,000 citizens illegally registered to vote, although election experts have disputed the accuracy of this figure.…