Impeachment article has 200 cosponsors: US rep.

President Donald Trump is leaning toward a legal team led by his current personal lawyer, Rudy Giuliani, as well as longtime ally Alan Dershowitz if he were to face an impeachment trial in the Senate, sources told ABC News.

Lawyers Jay Sekulow and Pat Cipollone are not expected to be involved this time around after working on the president's legal team last year, sources said.

House Democrats discussed impeaching the president in the wake of the siege on the U.S. Capitol, egged on by Trump during a rally hours earlier, on Friday. They circulated the draft of a single article citing "incitement of insurrection" that could be introduced as early as Monday. A full House vote could be held as early as the middle of next week.

Trump would have just nine days left in office on Monday and it's legally murky whether an ex-president can be impeached after leaving the presidency.

-ABC News' Katherine Faulders and John Santucci

Vice President Pence will attend President-elect Joe Biden's inauguration, according to a person familiar with his decision.

This comes the day after President Donald Trump tweeted he would not be attending.

On Friday morning, as Pence departed the White House, his press secretary, Devin O’Malley, said, "Vice President Pence and the second lady have yet to make a decision regarding their attendance."

Biden said Friday he would welcome Pence’s attendance, though he hadn't spoken to him about it.

"He's welcome. I think it's important that as much as we can stick to what have been the historical precedence of how and the circumstances of which an administration changes, should be maintained," Biden said. "And so ... the vice president is welcome to come, we would be honored to have him there, and to move forward in the transition."

-ABC News' Katherine Faulders

Sen. Sherrod Brown, D-Ohio, called on the U.S. Senate to expel Sens. Ted Cruz, R-Texas, and Josh Hawley, R-Mo., if the senators refuse to resign in the aftermath of this week's siege on the Capitol.

"Both @HawleyMO and @SenTedCruz have betrayed their oaths of office and abetted a violent insurrection on our democracy," Brown wrote on Twitter. "I am calling for their immediate resignations. If they do not resign, the Senate must expel them."

Both Republican senators have faced bipartisan condemnation for their roles in opposing the ratification of Electoral College votes.

-ABC News' Trish Turner

Sen. Pat Toomey, R-Pa., said Saturday that he believes the president "committed impeachable offenses" after the violent siege on the Capitol this week by a pro-Trump mob.

"I have to say I do think the president’s behavior this week does disqualify him from serving," Toomey said on Fox News.

"I don't know what they are going to send over," he said of the House effort to draw up an article of impeachment. "And one of the things I am concerned about frankly, is whether the House would completely politicize something. I do think the president committed impeachable offenses, but I don't know what's going to land on the Senate floor, if anything," he added.

The Republican senator voted against the objections to counting the electoral votes from Arizona and Pennsylvania this week.

While the senator did not explicitly call for Trump's removal from office, Toomey's comments come amid increased calls by Republicans to hold the president accountable for Wednesday's riot. Sen. Lisa Murkowski, R-Alaska, and Rep. Adam Kinzinger, R-Ill., have both called for Trump to vacate the presidency.