After more than eight hours of member questions and witness testimony, Nadler closed the hearing by detailing the alleged abuse of power by the president and urging Republican members to "stand behind" their oath of office.
Nadler, D-N.Y., said the three scholars Democrats invited to testify clearly established that soliciting foreign interference in American elections and obstructing a formal congressional probe are both impeachable offenses.
He argued that Republicans, however, have not mounted a vigorous defense of the president's actions, but instead have focused on the process. He called them out, however, for what he suggested was their hypocrisy, noting that they complained over time about not having a floor vote, not being able to call witness and not extending an invitation to the president for this hearing — all of which he said the Democrats have since done.
Nadler also conceded that Democrats need to bring a number of Trump supporters over to their side of the aisle as the process continues, but noted that polling shows a majority of Americans support the process.
Collins, the ranking member, continued to excoriate Democrats for the way in which he said the hearings have been conducted, saying Wednesday's hearing only included expert witnesses, not fact witnesses.
Collins, R-Ga., also said Democrats have not revealed sufficient evidence to support the impeachment inquiry.
"This is not a time to play hide the ball," he said. "The facts talked about have not been delivered."
Collins called on Rep. Adam Schiff, D-Calif., the chairman of the House Intelligence Committee, to testify about his panel's report on its findings in the impeachment inquiry, which it voted to send to the Judiciary Committee on Tuesday night.