Former US President Donald Trump will hold a rally on Saturday in Ohio, his first since his supporters' deadly attack on the Capitol, as he aims to bolster allies, berate his enemies and cement his influence over the Republican Party.

Facebook's independent oversight board on Wednesday upheld the platform's ban on former US president Donald Trump but called for a further review of the case within six months.

Former President Donald Trump told a top congressional Republican during the deadly assault by his supporters on the Capitol last month that the mob was "more upset" about his election defeat than lawmakers, a fellow Republican said.

Democrats on Wednesday will show new security camera video depicting the deadly attack on the US Capitol by Donald Trump's supporters as they open their formal case charging the former president with inciting insurrection.

The historic second Impeachment trial of Donald Trump opened in the US Senate on Tuesday, with prosecutors vowing to win a conviction based on the "cold, hard facts" of the January storming of the US Capitol.

Former US President Donald Trump's unprecedented second impeachment trial takes shape this week, as Democrats outline their case and Trump scrambles to prepare a defense amid disarray on his legal team.

The Senate impeachment trial of Donald Trump on a charge of inciting the deadly Capitol siege could draw its first challenge on Tuesday, with a Republican senator arguing that trying a former president would violate the Constitution.

The European Union's top officials expressed relief on Wednesday that they would again have a friend in the White House as Joe Biden replaces Donald Trump.

US President Donald Trump on Wednesday pardoned 73 people, including his former aide Steve Bannon and other allies, just hours before he was due to leave office

President Donald Trump leaves the presidency on Wednesday under a dark cloud of his own making, ending his single four-year term stained by two impeachments, deep political divisions

Donald Trump emerged from isolation at the White House on Tuesday to brand the likely second impeachment of his presidency "absolutely ridiculous" and warn that it has triggered "tremendous anger."

An increasingly isolated and angry President Donald Trump, cut off by Twitter in the waning days of his term, faces a renewed drive by Democrats to remove him from office after he incited his supporters to storm the US Capitol.