One of the men Rep. Nancy Mace (R-SC) accused of sexual abuse in a fiery speech on the House floor last month is suing the congresswoman for defamation, a test of legal rules that members of Congress say protect remarks in the chamber.

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.

Charleston, falsely accused him of being a sex trafficker made good on their promise to file a lawsuit against Mace if she didn’t apologize and retract her statement. They filed suit Friday, March 14.