Rep. Ted Lieu (D-CA) has become infamous for trying to troll President Donald Trump on Twitter. He has turned his “mean tweets” into a fundraising machine. But on Wednesday, Lieu had egg on his face when he was confronted by CNN — yes, CNN — about his behavior on social media.

The context was Lieu’s tweets prior to Tuesday’s hearing with Attorney General Jeff Sessions at the House Judiciary Committee. Lieu, attempting to mimic Trump’s habit of assigning nicknames to his political opponents, kept referring to the Attorney General as “Lyin’ Jeff Sessions.”

Brewing a tasty cup of @Keurig coffee to help get me through the Lyin’ Jeff Sessions hearing that is about to start. Do you think @seanhannity covers this hearing or does he discuss the threat of emojis? pic.twitter.com/yUBnPu2kKO — Ted Lieu (@tedlieu) November 14, 2017

Some of Lieu’s tweets were sent from the hearing room itself:

Lyin’ #JeffSessions takes the oath, which would be the necessary first step if he were to be prosecuted for perjury. pic.twitter.com/nghOuLCUZm — Ted Lieu (@tedlieu) November 14, 2017

Kate McKinnon about to testify before the House Judiciary Committee. Oh wait, that’s actually Lyin’ Jeff Sessions. #SessionsHearing pic.twitter.com/6SoCneca7o — Ted Lieu (@tedlieu) November 14, 2017

Lieu tweeted the portion of his CNN interview when he accused Sessions of misleading Congress about contacts with Russia and meetings about Russia.

But he left out an exchange when the CNN anchors asked him to justify calling Sessions names and mocking his appearance on social media prior to the hearing. “Is that a grown-up thing to do, Congressman?”

CNN just roasted @TedLieu for his conduct during the Sessions hearing pic.twitter.com/DNmVNIm6Td — Jack Posobiec (@JackPosobiec) November 15, 2017

Lieu broke with First Lady Michelle Obama’s dictum, “When they go low, we go high.” Instead, Lieu said: “When they go low, we fight back.”

Lieu, a colonel in the U.S. also argues that President Trump is illegitimate.

Joel B. Pollak is Senior Editor-at-Large at Breitbart News. He was named one of the “most influential” people in news media in 2016. He is the co-author of How Trump Won: The Inside Story of a Revolution, is available from Regnery. Follow him on Twitter at @joelpollak.