Fox Business Network host Lou Dobbs, who is one of the most ardent supporters of President Trump in the media, went "scorched Earth" on incoming Sen. Mitt Romney for his op-ed decrying Trump's lack of character.

Dobbs called Romney a "treacherous fool" and a "creep" on Wednesday night, saying he lied to the voters of Utah after accepting Romney's endorsement during the 2018 election.

"He's reprehensible," said Dobbs. "I can't believe the people of Utah elected this creep."

Dobbs also ripped Romney for acting "petty" and "small" in his criticism. Dobbs was incredulous when Republican strategist Ed Rollins told him Trump endorsed Romney ahead of the 2018 election.

"You mean the people of Utah didn't know that he was anti-Trump," he said to Rollins. "He didn't run against Trump? He ran with Trump. So he's lied to the people of Utah."