Lawyer Michael Avenatti fired back at Senate Judiciary Chairman Chuck Grassley, R-Iowa, Friday, after Grassley referred the attorney and his client Julie Swetnick for federal investigation.

Grassley’s office sent the Justice Department two referrals Thursday and Friday asking that Avenatti and Swetnick, who accused Supreme Court Justice Brett Kavanaugh of sexual misconduct, be investigated for interfering in Kavanaugh’s confirmation process.

"How ignorant is Grassley? He keeps publicly demanding an investigation knowing full well that it will likely never happen - it is all for show. And if it does, he has placed Kavanaugh at risk of being removed from the SCOTUS. This is what happens when you never attend law school,” Avenatti wrote on Twitter late Friday.

Swetnick, according to an NBC story published Thursday, said that Avenatti “twisted [her] words” in his Oct. 2 statement that said she had observed Kavanaugh spiking drinks at a party decades earlier. Swetnick initially issued a sworn statement on Sept. 26.

Grassley has referred both for investigation on the basis they may have committed federal criminal offenses of conspiracy, false statements, and obstruction of Congress.

“When a well-meaning citizen comes forward with information relevant to the committee’s work, I take it seriously. It takes courage to come forward, especially with allegations of sexual misconduct or personal trauma,” Grassley said in a statement issued Friday.

“But in the heat of partisan moments, some do try to knowingly mislead the committee,” he said. "Thankfully, the law prohibits such false statements to Congress and obstruction of congressional committee investigations. For the law to work, we can’t just brush aside potential violations. I don’t take lightly making a referral of this nature, but ignoring this behavior will just invite more of it in the future.”

Avenatti told Law & Crime Grassley was “full of crap” and “knows nothing about the law” because Grassley is not a trained lawyer.