WATCH: Trump revives 'nasty' attack against Kamala Harris after she made his attorney general answer for his lies

Following Democrats' sharp questioning of Attorney General William Barr on Wednesday, President Donald Trump attacked Sen. Kamala Harris (D-CA) in an interview on Fox Business with Trish Regan, reviving a common attack he uses against women who challenge him.

"It is so ridiculous," Trump. "He is an outstanding man with an outstanding mind. He really performed incredibly well today is what I heard."

"Kamala Harris—" began Regan.

"She was probably very nasty," said Trump. "How about these three people running, three not doing very well but three of them are ready for a particular office, I think, maybe you're talking to the person right now. So you have three others running against me and they are up there ranting and raving, like lunatics, frankly."

"And they are running and you have Bill Barr, highly respected, great attorney general and he has to take the abuse from people that are running for office ... And I really think the American people see through it so easily, Trish. It is so easy to see through."

Watch below: