Impeachment article has 200 cosponsors: US rep.

Trump has announced he will not attend Biden's inauguration on Jan. 20.

"To all of those who have asked, I will not be going to the Inauguration on January 20th," Trump tweeted Friday morning.

It comes just hours after Trump, in video posted to Twitter Thursday evening, effectively conceded and said he would focus on an "ensuring a smooth, orderly and seamless transition of power."

Only incumbent presidents -- John Adams in 1801, John Quincy Adams in 1829 and Andrew Johnson in 1869 -- did not attend the inaugurations of their successors. Johnson, like Trump, was impeached and not convicted.
-ABC News' Chris Donovan

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