Former acting attorney general Jeffrey Rosen and his former deputy Richard Donoghue described Thursday how Trump tried to get the Department of Justice to seize voting machines in late 2020.

Donoghue said an "agitated" Trump called an emergency meeting on New Year's Eve to make the request.

"There was nothing wrong with them so we told him no," Rosen told the committee. "There was no factual basis nor was there any legal authority to do so."

"Toward the end of the meeting, the president, again, was getting very agitated," Donoghue recalled. "And he said, 'People tell me I should just get rid of both of you, I should just remove you and make a change in leadership, put Jeff Clark in, maybe something will finally get done.'"

After detailing an effort by Jeffrey Clark to replace acting attorney general Jeff Rosen in order to help Trump overturn the election, Rep. Adam Kinzinger, R-Ill., turned to former top DOJ lawyer Steven Engel on other efforts by Trump to pressure the department.

After Trump sent a proposed draft lawsuit, done outside the department, to top DOJ attorneys that he wanted to send to the Supreme Court, Engel called it a "meritless lawsuit" and an "unusual request" that the department would never bring.

"Obviously, even the person who drafted this lawsuit didn't really understand in my view the law, and or how the Supreme Court works or the Department of Justice," Engel said.

Trump and the White House also asked the Department of Justice if it could point a special counsel to look at widespread election fraud -- which did not exist -- with Engel detailing why "that was not legally available," before Kinzinger claimed Trump even offered the position of special counsel to campaign attorney Sidney Powell, as his pressure campaign continued.

The committee outlined how Rep. Scott Perry, R-Penn., played a role in trying to elevate Jeffrey Clark, then an obscure DOJ official, to department leadership amid the resistance from other DOJ officials to Trump's efforts to undermine the election.

Records from the National Archives obtained by the committee showed Perry and Clark met Trump on Dec. 22, 2020. Perry later told a local television news network he had worked with Clark before and "obliged" when asked by Trump to introduce him.

The committee later displayed text messages which showed Perry advising White House chief of staff Mark Meadows to help with Clark's ascension.

"Mark, just checking in as time continues to count down. 11 days to 1/6 and 25 days to inauguration. We gotta get going," Perry wrote to Meadows on Dec. 26, 2020.

The next text, sent 30 minutes later, showed Perry telling Meadows to "call Jeff."

"I just got off the phone with him and he explained to me why the principal deputy won't work especially with the FBI. They will view it as not having the authority to enforce what needs to be done."

Former acting deputy attorney general Richard Donoghue said he tried to convey to Jeffrey Clark that a draft letter he circulated seeking to ask Georgia's governor and other top state officials to convene the state legislature into a special session to investigate claims of voter fraud -- which didn't exist -- could launch the country into a "constitutional crisis."

"I had to read both emails and the attached letter twice to make sure I really understood what he was proposing -- because it was so extreme to me, I had a hard time getting my head around it initially," he recalled, adding he and former acting attorney general Jeffrey Rosen had "visceral reactions to it."

"I thought it was very important to get a prompt response rejecting this out of hand. In my response, I explained a number of reasons that this is not the department's rule to suggest or dictate [to] state legislatures," he said.

"More importantly, this was not based on fact. This was actually contrary to the facts as developed by department investigations over the last several weeks and months," he added. "For the department to insert itself into the political process this way, I think, would have had great consequences for the country. It may very well have spiraled into a constitutional crisis -- and I want to make sure that he understood the gravity of the situation because he did not seem to really appreciate it."

A hard-right conservative member of the House and leader of the House Freedom Caucus, Rep. Scott Perry, R-Penn., has been one of Trump's most loyal supporters in Congress.

As the Jan. 6 committee laid out Thursday, that support continued after the 2020 election, when he was among the Republicans who met with Trump at the White House on Dec. 21, 2020, on how to continue challenging Joe Biden's victory and push claims of voter fraud.

The next day, Perry introduced Jeffery Clark to Trump in a White House meeting. Clark did not work on election issues at the Justice Department, and he met with the president without the knowledge of his superiors in violation of DOJ rules.

"So, for criminal matters, the policy for a long time has been the only the attorney general in the deputy attorney general from the DOJ side can have ... conversations with the White House," Jeffrey Rosen, the then-acting attorney general, told the committee.

Why was Clark recommended? Here's how Rudy Giuliani explained it, in his recorded interview with the committee: “I do recall saying to people that somebody should be put in charge of the Justice Department who isn't frightened of what is going to be done to their reputation.”

Richard Donoghue, the acting deputy attorney general at the time, said Perry wanted Clark to "take over" the Justice Department, and pushed Mark Meadows, the White House chief of staff and his former House colleague, to make it happen.

-ABC News' Benjamin Siegel