Sixty-two Democrats have signed on to a letter to Speaker Nancy Pelosi calling on House leaders to immediately reconvene the House of Representatives to reckon with the "assault on our democracy" that took place at the Capitol this week.

"We could take up the question of whether President Trump should be censured or impeached for encouraging a violent attack on the United States Congress, as well as Representative Raskin’s proposal that Congress appoint a body, as provided by the 25th Amendment, to determine whether the President is fit to discharge the powers and duties of his office," the letter reads.

It comes ahead of House Democrats convening by phone at noon to discuss a path forward on getting Trump out of office.

-ABC News' John Parkinson and Mariam Khan

Republican Sen. Ben Sasse of Nebraska said Friday morning he would consider moving on articles of impeachment if the House brought charges against the president to the Senate.

"The House, if they come together and have a process, I will consider whatever articles they might move because as I've told you, I believe the president has disregarded his oath of office," Sasse told "CBS This Morning."

"He swore an oath to the American people to preserve, protect and defend the constitution. He acted against that. What he did was wicked," Sasse said.

Sasse is the first GOP senator to publicly express an openness to impeachment since Wednesday's insurrection at the Capitol. In the president's impeachment trial last year, Sen. Mitt Romney of Utah was the only Republican to vote to remove Trump from office.

-ABC News' Trish Turner

Attorney General for the District of Columbia Karl Racine faulted Capitol Hill Police for failing to contain Wednesday’s insurrection but said his office will also investigate those who incited the mob -- including the president.

"Clearly, the Capitol was ground central in the mob’s behavior. Donald Trump Jr., Rudy Giuliani, even the president were calling on supporters and hate groups to go to the Capitol, and in Rudy’s words, 'exercise combat justice,'" Racine told "Good Morning America" Anchor Cecilia Vega in an interview Friday morning. "We’re going to investigate not only the mob, but those who incited the violence."

Racine also said authorities would use the Internet to identify the rioters who violated the Capitol and noted, "More people died at the Capitol of the United States than in Benghazi."

-ABC News' Dee Carden

House Democrats are moving closer to launching a second impeachment effort against President Trump in the wake of insurrection at the Capitol -- an expedited push that could be voted out of the House as early as next week.

House Judiciary Chairman Jerry Nadler, D-N.Y., signaled the speed at which the process could work in a statement late Thursday.

"We have a limited period of time in which to act. The nation cannot afford a lengthy, drawn out process, and I support bringing articles of impeachment directly to the House floor," he said, suggesting that impeachment effort would bypass the House Judiciary Committee entirely.

Democrats are expected to introduce a privileged impeachment resolution in the House as soon as Monday, which could tee up debate and a floor vote by Wednesday, if House Majority Leader Steny Hoyer reconvenes the chamber.

House Speaker Nancy Pelosi will convene Democrats for their first caucus call since events at the Capitol at noon Friday, where impeachment is expected to be a topic of discussion.

-ABC News' Benjamin Siegel, Mariam Khan and Katherine Faulders

Rep. Liz Cheney, R-Wyo., a member of House GOP leadership and one of the first prominent Republicans to acknowledge Biden's victory, sent a 21-page memo to her conference making the case against a challenge to the Electoral College certification process on Wednesday, arguing that it would improperly overrule states' authority over elections, and set a "dangerous precedent" down the line for future elections and sessions of Congress.

"By objecting to electoral slates, members are unavoidably asserting that Congress has the authority to overturn elections and overrule state and federal courts. Such objections set an exceptionally dangerous precedent, threatening to steal states’ explicit constitutional responsibility for choosing the President and bestowing it instead on Congress," Cheney wrote.

"This is directly at odds with the Constitution’s clear text and our core beliefs as Republicans. Democrats have long attempted, unconstitutionally, to federalize every element of our nation—including elections. Republicans should not embrace Democrats’ unconstitutional position on these issues," she added.

Cheney raises questions about the proposal from some Republicans to set up a commission to investigate concerns about the election, calling it a "problematic" set up that would take much longer than ten days to wrap up, and potentially delay the inauguration. The memo also exhaustively summarizes the court rulings against the president's legal efforts in the six states Republicans plan to target on Wednesday: Arizona, Nevada, Wisconsin, Michigan, Georgia and Pennsylvania.

-ABC News' Benjamin Siegel