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

In the wake of Wednesday’s U.S. Capitol siege, at least 10 Trump administration officials have resigned.

Among them are five White House officials. These are Matthew Pottinger (deputy national security adviser), Tyler Goodspeed (acting chairman of the White House Council of Economic Advisers), Stephanie Grisham (Melania Trump’s chief of staff and spokeswoman), Rickie Niceta (White House social secretary) and Sarah Matthews (White House deputy press secretary).

Other officials who have resigned following Donald Trump's encouragement of Capitol protests, include Elaine Chao (secretary of transportation), John Costello, (deputy assistant secretary of commerce for intelligence and security) and Mick Mulvaney (U.S. special envoy to Northern Ireland and former White House chief of staff).

Ryan Tully, the senior director for Europe and Russian affairs on the White House National Security Council has also willingly left his post, as has Betsy Devos, the secretary of education.

ABC News' Elizabeth Thomas.