The House Judiciary on Wednesday voted to hold Attorney General Bill Bar in contempt.
The 24 to 16 vote means the contempt resolution will now move to the floor of the House of Representatives for its final vote.
The committee's chair, Rep. Jerry Nadler, spoke to reporters after the vote.
Nadler said Barr had "proved himself to be the personal attorney to President Trump rather than the Attorney General of the United States."
"We are now in a Constitutional crisis," Nadler concluded.