A last-ditch Trump administration effort to hunt for noncitizen voters ahead of November’s elections is requiring federal employees to misrepresent themselves on voter lookup tools in a way that likely violates state laws, according to a federal whistleblower’s statement released Monday.

The Department of Homeland Security probe known as the “Unlawful Voter Initiative” also asks employees to create federal law enforcement records about voters based on unreliable data, the account warns. That could potentially wrongly implicate U.S. citizens in official documentation that could spur further investigation.

The anonymous, nearly 30-page disclosure was published Monday by Democratic Senate Minority Leader Chuck Schumer of New York and Democratic Sen. Alex Padilla of California, the ranking member of a Senate committee overseeing federal elections.