President Donald Trump has been impeached by the US House of Representatives for a historic second time.

Mr Trump was charged with “incitement of insurrection” over the deadly mob siege of the Capitol in a swift and stunning collapse of his final days in office.

With the Capitol secured by armed National Guard troops, the House voted 232-197 to impeach Mr Trump.

The proceedings moved at lightning speed, with representatives voting just one week after violent pro-Trump loyalists stormed the US Capitol, egged on by the president’s calls for them to “fight like hell” against the election results.

Ten Republicans joined Democrats who said Mr Trump needed to be held accountable and warned ominously of a “clear and present danger” if Congress should leave him unchecked before Democrat Joe Biden’s inauguration on January 20.

Mr Trump is the only US president to be impeached twice.

The Capitol insurrection stunned and angered politicians, who were sent scrambling for safety as the mob descended, and it revealed the fragility of the nation’s history of peaceful transfers of power.

The riot also forced a reckoning among some Republicans, who have stood by Mr Trump throughout his presidency and largely allowed him to spread false attacks against the integrity of the 2020 election.

House speaker Nancy Pelosi invoked Abraham Lincoln and the Bible, imploring colleagues to uphold their oath to defend the US constitution from all enemies, foreign “and domestic”.

She said of Mr Trump: “He must go, he is a clear and present danger to the nation that we all love.”

Holed up at the White House, watching the proceedings on TV, Mr Trump took no responsibility for the bloody riot seen around the world, but issued a statement urging “no violence, no lawbreaking and no vandalism of any kind” to disrupt Mr Biden’s ascension to the White House.

In the face of the accusations against him and with the FBI warning of more violence, Mr Trump said: “That is not what I stand for, and it is not what America stands for. I call on all Americans to help ease tensions and calm tempers.”

Mr Trump was first impeached by the House in 2019 over his dealings with Ukraine, but the Senate voted in 2020 to acquit. He is the first to be impeached twice. None has been convicted by the Senate, but Republicans said that could change in the rapidly shifting political environment as officeholders, donors, big business and others peel away from the defeated president.

The soonest Republican Senate leader Mitch McConnell would start an impeachment trial is next Tuesday, the day before Mr Trump is already set to leave the White House, Mr McConnell’s office said. The legislation is also intended to prevent Mr Trump from ever running again.

Mr McConnell believes Mr Trump committed impeachable offences and considers the Democrats’ impeachment drive an opportunity to reduce the divisive, chaotic president’s hold on his party, a Republican strategist told The Associated Press.

Mr McConnell told major donors over the weekend that he was finished with Mr Trump, said the strategist.

In a note to colleagues on Wednesday, Mr McConnell said he had “not made a final decision on how I will vote”.

Unlike his first time, Mr Trump faces this impeachment as a weakened leader, having lost his own re-election as well as the Senate Republican majority.

Even Mr Trump’s ally Kevin McCarthy, the House Republican leader, shifted his position and said the president bears responsibility for the horrifying day at the Capitol.

In making a case for the “high crimes and misdemeanours” demanded in the constitution, the approved four-page impeachment resolution relies on Mr Trump’s own incendiary rhetoric and the falsehoods he spread about Mr Biden’s election victory, including at a rally near the White House on the day of the January 6 attack on the Capitol.

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. The riot delayed the tally of Electoral College votes that was the last step in finalising Mr Biden’s victory.