U.S. Rep. Markwayne Mullin challenged Michael Avenatti, the high-profile lawyer of adult actress Stormy Daniels, to a charity fight Tuesday morning.

The challenge came in response to Avenatti's suggestion last week that he and Donald Trump Jr., the president's eldest son, compete in a mixed martial arts fight.

“It's ridiculous that @MichaelAvenatti would even challenge @DonaldJTrumpJr to a fight,” Mullin wrote on Twitter on Tuesday. “But if he's looking for a publicity stunt, I‘d be more than happy to meet him on the mat.”

Mullin, a Westville Republican and staunch defender of President Donald Trump, is a former mixed martial arts fighter with a 3-0 record in the Xtreme Fighting League. He introduced legislation last year to extend boxing regulations to mixed martial arts.