US Democrats began the process Monday of impeaching President Donald Trump for a historic second time, accusing him of "incitement of insurrection" over his supporters' deadly storming of the US Capitol.
The move -- which threatens to torpedo the single-term president's future political ambitions -- could make for a frenetic culmination of four years of controversy ahead of Joe Biden's January 20 inauguration.
Democrats introduced a resolution in the House of Representatives calling for Vice President Mike Pence and the cabinet to remove Trump -- who has been absent from the public spotlight for days -- as unfit for office under the Constitution's 25th amendment.
But Republicans blocked an immediate vote on the resolution and Democrats followed up by introducing an article of impeachment of Trump for "incitement of insurrection".
"This was an attempted coup, to overthrow the government, and we have a responsibility as Congress to respond to that," Congressmen David Cicilline, who introduced the resolution, told reporters afterward.
"We have a particular responsibility to hold everyone accountable who was involved in any way, from the president on down," he said.
Trump has been largely silent in recent days -- making few statements and holding no news conferences. Twitter, his favored public platform, has banned him for language that could incite violence.
He plans to travel to Texas on Tuesday in one of his final trips as president, reportedly to claim success in delivering on his pledge to build a border wall to keep immigrants from Mexico out of the US.
As Democrats began to act, the US Capitol building was open to lawmakers and staff but under tight security and ringed by a metal fence after Wednesday's assault by Trump supporters that left five people dead.
'Republican Complicity Endangers America'
Top Democrat in the US House of Representatives Nancy Pelosi accused Republicans of endangering America by blocking moves to immediately remove Trump from office.
Pelosi slammed Republican lawmakers for blocking a resolution introduced by Democrats calling on Vice President Mike Pence and the cabinet to invoke the 25th Amendment of the Constitution and remove Trump from the White House.
"The House Republicans rejected this legislation to protect America, enabling the president's unhinged, unstable and deranged acts of sedition to continue," Pelosi said in a statement.
"Their complicity endangers America, erodes our democracy, and it must end." "On Wednesday, the President incited a deadly insurrection against America that targeted the very heart of our Democracy," Pelosi said.
"The president represents an imminent threat to our constitution, our country and the American people, and he must be removed from office immediately," she added.
Pelosi said a vote would be held in the House on Tuesday on the demand by Democrats that Pence invoke the 25th Amendment and remove Trump from office.
"We are further calling on the Vice President to respond within 24 hours after passage," she said.
"As our next step, we will move forward with bringing impeachment legislation to the floor," the speaker of the Democratic-controlled House said.
"The president's threat to America is urgent, and so too will be our action."
Historic second impeachment
Inside, some windows and doors that were broken and breached by rioters remained boarded up with plywood, while reinforced glass on the outside doors near the Rotunda bore cracks from repeated battering.
The attack on Congress shook the core of American democracy and drew international condemnation. It has ignited a new effort to remove Trump, who is accused of inciting the mob before it stormed the capitol where lawmakers were certifying Biden's November 3 win.
Trump was already impeached once by the Democratic-controlled House in December 2019 for pressuring the Ukrainian president to dig up political dirt on Biden.
He was acquitted by the Republican-majority Senate.
If the House again votes to impeach, Trump would be the first US leader to be formally charged for a second time with "high crimes and misdemeanors."
Though time is running short, Democrats likely have the votes in the House to impeach Trump again and could draw increased Republican support for the move.
In introducing the resolution, Cicilline said that while it has no Republican co-sponsors, he expects it will find Republican backing.
Although two Republican Senators -- Pat Toomey and Lisa Murkowski -- have urged Trump to resign, Democrats are unlikely to muster the two-thirds majority needed to convict Trump in the 100-member Senate and remove him from office.
But the effort is nevertheless seen by Democrats as worthwhile. Although any conviction would likely occur after Trump has already left office, it would lead to a secondary vote on banning Trump, who is thought to be considering a run in 2024, from holding federal public office again.
'I want him out'
Authorities are still seeking to arrest more Trump supporters who stormed the Capitol following a rally by the president repeating false claims that he had lost the election to Biden due to fraud.
Hundreds of off-duty police on Sunday lined Constitution Avenue in Washington and saluted as a hearse rolled slowly by carrying the body of Brian Sicknick, the police officer who died in the attack on the Capitol.
Capitol security has been stepped up and Trump supporters have threatened new action in coming days both in Washington and state capitol buildings.
Senate rules mean the upper chamber would likely be unable to open an impeachment trial before January 19.
Some Democrats, for their part, have expressed concern that a Senate trial would overshadow and hamper Biden's efforts to quickly lay out his agenda, starting with the fight against the coronavirus and the need to support the economy.