Lewandowski has an unusual role at DHS, where he is not a paid government employee but is nonetheless acting as a top official, helping Noem run the sprawling agency. For months, members of Congress have asked the agency to detail the scope of his work and authority.

At a Senate Judiciary Committee hearing on Tuesday, Sen. Richard Blumenthal, D-Conn., asked Noem whether Lewandowski has “a role in approving contracts” at DHS. Noem responded with a flat denial: “No.”

But internal DHS records reviewed by ProPublica contradict Noem’s Senate testimony. The records show Lewandowski personally approved a multimillion-dollar equipment contract at the agency last summer.