WASHINGTON (AP) — President Donald Trump is on the verge of being impeached for a second time in an unprecedented House vote Wednesday, a week after he encouraged a mob of loyalists to “fight like hell” against election results just before they stormed the U.S. Capitol in a deadly siege.

“We are debating this historic measure at a crime scene,” said Rep. Jim McGovern, D-Mass.

Security was exceptionally tight, beefed up by armed National Guard troops, with secure perimeters set up around the Capitol complex and metal-detector screenings required for lawmakers entering the House chamber.

While Trump's first impeachment in 2019 brought no Republican votes in the House, a small but significant number of leaders and lawmakers are breaking with the party to join Democrats, saying Trump violated his oath to protect and defend U.S. democracy.

The stunning collapse of Trump's final days in office, against alarming warnings of more violence ahead by his followers, leaves the nation at an uneasy and unfamiliar juncture before Democrat Joe Biden is inaugurated Jan. 20.

Trump, who would become the only U.S. president twice impeached, faces a single charge of “incitement of insurrection.”

The four-page impeachment resolution relies on Trump’s own incendiary rhetoric and the falsehoods he spread about Biden’s election victory, including at a White House rally on the day of the Jan. 6 attack on the Capitol, in building its case for high crimes and misdemeanors as demanded in the Constitution.

Trump took no responsibility for the riot, suggesting it was the drive to oust him rather than his actions around the bloody riot that was dividing the country.

“To continue on this path, I think it’s causing tremendous danger to our country, and it’s causing tremendous anger,” Trump said Tuesday, his first remarks to reporters since last week’s violence.

A Capitol police officer died from injuries suffered in the riot, and police shot and killed a woman during the siege. Three other people died in what authorities said were medical emergencies. Lawmakers had to scramble for safety and hide as rioters took control of the Capitol and delayed by hours the last step in finalizing Biden's victory.

The outgoing president offered no condolences for those dead or injured, only saying, “I want no violence.”

At least five Republican lawmakers, including third-ranking House GOP leader Liz Cheney of Wyoming, were unswayed by the president's logic. The Republicans announced they would vote to impeach Trump, cleaving the Republican leadership, and the party itself.

“The President of the United States summoned this mob, assembled the mob, and lit the flame of this attack,” said Cheney in a statement. “There has never been a greater betrayal by a President of the United States of his office and his oath to the Constitution.”

Cheney's father was the vice president under President George W. Bush and a Republican leader in the House. “She knows of what she speaks,” said Rep. Steny Hoyer of Maryland, the Democratic majority leader.

Unlike a year ago, Trump faces impeachment as a weakened leader, having lost his own reelection as well as the Senate Republican majority.

Senate Republican leader Mitch McConnell of Kentucky is said to be angry at Trump, and it's unclear how a Senate impeachment trial would play out. The New York Times reported that McConnell thinks Trump committed an impeachable offense and is glad Democrats are moving against him. Citing unidentified people familiar with McConnell's thinking, the Times reported McConnell believes moving against Trump will help the GOP forge a future independent of the divisive, chaotic president.

The president was said to be livid with perceived disloyalty from McConnell and Cheney, as calls mounted for her ouster. He was also deeply frustrated that he could not hit back with his shuttered Twitter account, the fear of which has kept most Republicans in line for years, according to White House officials and Republicans close to the West Wing who weren’t authorized to speak publicly about private conversations.

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