President Trump Donald John TrumpBubba Wallace to be driver of Michael Jordan, Denny Hamlin NASCAR team Graham: GOP will confirm Trump's Supreme Court nominee before the election Southwest Airlines, unions call for six-month extension of government aid MORE on Saturday ripped congressional Democrats after a tense House hearing with acting Attorney General Matthew Whitaker the previous day.

Whitaker appeared in front of the House Judiciary Committee for nearly six hours Friday, where he was grilled by Democrats about special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE’s investigation and other topics. He repeatedly refused to discuss his conversations with Trump, infuriating Democrats.

“The Democrats in Congress yesterday were vicious and totally showed their cards for everyone to see. When the Republicans had the Majority they never acted with such hatred and scorn!” Trump tweeted Saturday morning.

The Democrats in Congress yesterday were vicious and totally showed their cards for everyone to see. When the Republicans had the Majority they never acted with such hatred and scorn! The Dems are trying to win an election in 2020 that they know they cannot legitimately win! — Donald J. Trump (@realDonaldTrump) February 9, 2019

Whitaker sparred with various lawmakers during his testimony before the Judiciary panel, with Democrats peppering him with questions and blasting his responses when asked about Mueller, the administration's separation of migrant families at the border and other topics.

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At one point, the acting top cop shocked committee members and spectators alike after he told Judiciary Chairman Jerrold Nadler (D-N.Y.) that his time for questioning had run out.

“Mr. Chairman, I see that your five minutes is up,” Whitaker said, drawing gasps from the panel and a packed crowd.

“I am here voluntarily. We have agreed to five-minute rounds,” he added.

Lawmakers routinely go over their five-minute time limits for questioning, and it is particularly rare for a witness to tell a committee chairman that they have gone over their time limit.

“The committee will come to order. I will point out we didn't enforce the five-minute rule on acting Attorney General Whitaker,” Nadler responded.

Whitaker also faced a litany of pointed questions regarding his role in the special counsel's probe into possible collusion between the Trump campaign and Moscow in 2016, with which he said he had not interfered.

Democratic Reps. Hakeem Jeffries Hakeem Sekou JeffriesPelosi: House will stay in session until agreement is reached on coronavirus relief Races heat up for House leadership posts Postmaster general earned millions from company with ties to Postal Service: report MORE (N.Y.) and Pramila Jayapal Pramila JayapalDHS opens probe into allegations at Georgia ICE facility Progressive Caucus co-chair: Whistleblower complaint raises questions about 'entire detention system' Buttigieg, former officials added to Biden's transition team MORE (Wash.) raised eyebrows with their critical lines of questioning.

Jeffries asked Whitaker, “How the heck did you become the head of the Department of Justice?” while Jayapal became emotional when discussing the administration’s family separation policy at the southern border.

“Our country is still reeling from the horror of family separations that occurred at the border,” Jayapal said at the opening of her line of questioning. “The truth is, we may not know how many children were separated from their parents.”

Trump suggested Saturday that Democrats were critical of Whitaker as part of their effort to win the presidential election next year.

“The Dems are trying to win an election in 2020 that they know they cannot legitimately win!” he tweeted.