Rep. Nancy Mace (R-SC) was sued for defamation in federal court Thursday by a businessmen whom she accused of being a sexual predator in a fiery House floor speech last month.

Brian Musgrave, one of four businessmen whom Mace claimed were involved in sex trafficking and filming non-consensual nude videos of women — including herself — filed a lawsuit against the congresswoman in a South Carolina federal district court Thursday, denying all allegations.

He added that he never tried to “film” or “incapacitate” female victims, “and her team destroyed the lives” of himself and his family.

In the explosive remarks last month, Mace said she found the more than 10,000 videos and other photographic evidence on the phone of her ex-fiancé, Patrick Bryant.

“These men didn’t just harm their victims; they recorded their depravity as if it were a badge of honor,” the congresswomen alleged. 

“These men aren’t just criminals – they’re predators,” Mace declared.

The South Carolina Republican claimed that Musgrave co-owned properties with Bryant where some of the alleged sexual assaults took place. 

She further alleged that the properties owned by Musgrave and Bryant had been outfitted with hidden cameras. 

Mace claimed that she also “blacked out” for the first and only time in her life after being served “two small vodka sodas” by Bryant and one of his business partners at a property co-owned by Musgrave. 

“Nancy Mace’s statement tonight is a dangerous mix of falsehoods and baseless accusations, recklessly leveled at four individuals without a shred of evidence,” Musgrave told The Post last month. 

“Her continued pattern of making inflammatory claims without proof is not only reckless but a blatant attempt to weaponize the legal system for political and personal gain,” he added.

Musgrave is seeking punitive damages in an amount to be determined by a jury “sufficient to impress upon the defendant the seriousness of her conduct and to deter such similar conduct in the future,” according to the suit.

Mace, who presented no evidence during her remarks, is shielded from potential criminal prosecution and civil lawsuits by the Constitution’s speech and debate clause, which provides lawmakers with immunity for “acts taken within the legislative sphere.”

Bland Richter, the law firm representing Musgrave in his complaint, acknowledged the constitutional protection afforded to the congresswoman but said it aims to “test the legal limits of that protection.” 

“Musgrave contends the mere fact Ms. Mace was elected to serve as a United States Congresswoman does not grant her the power to destroy a man’s reputation with impunity and use the hallowed floor of the House of Representatives as a sanctuary to destroy him,” read a statement released by Bland Richter. 

The law firm said Mace “rejected the repeated offers simply to retract her allegations against Brian Musgrave and apologize” before the lawsuit was filed. 

“She has elected instead to litigate these matters.  Truth is the defense to defamation.  Brian Musgrave welcomes the truth,” Bland Richter said. 

The Post reached out to Mace’s spokesperson for comment.