Brian Musgrave, one of the four men Mace accused of filming acts of sexual assault in a House floor speech last month, sued Mace for libel and defamation in federal court.

Nancy Mace (R-S.C.) is facing a defamation lawsuit filed by one of the four men she has publicly accused of sexual abuse in a floor speech, in a case that could test the legal protections members of Congress have for their official conduct.