The Department of Homeland Security is investigating allegations that Rep. Eric Swalwell (D-Calif.) hired a nanny who was not authorized to work in the United States, according to multiple reports.

A spokesperson for U.S. Citizenship and Immigration Services (USCIS) confirmed to NewsNation that the agency "has been collecting information on the allegations" involving the congressman. The specific details of the allegations and timeline of the investigation have not been disclosed.

The probe comes amid other challenges facing Swalwell, who is also facing separate sexual assault allegations from a former staffer in an unrelated matter. These multiple allegations have created additional scrutiny for the California Democrat.

Some members of Congress have reportedly discussed potential disciplinary measures regarding Swalwell, though no formal actions have been taken. California Governor Gavin Newsom has not publicly commented on potential discipline related to the allegations.

Swalwell has not publicly responded to requests for comment regarding the DHS investigation. The congressman serves on the House Judiciary Committee and has been a prominent Democratic voice on various national issues.