House Speaker Nancy Pelosi to ‘address future plans’ in Thursday speech as Republicans projected to win

The House action could start as soon as Monday as pressure increases on Trump to step aside. A Republican senator, Pat Toomey of Pennsylvania, joined Republican Sen. Lisa Murkowski of Alaska in calling for Trump to ``resign and go away as soon as possible.''

A stunning end to Trump's final 10 days in office was underway as lawmakers warned of the damage the president could still do before Joe Biden was inaugurated Jan. 20. Trump, holed up at the White House, was increasingly isolated after a mob rioted in the Capitol in support of his false claims of election fraud.

``We will act with urgency, because this President represents an imminent threat,'' Pelosi said in a letter late Sunday to colleagues.

``The horror of the ongoing assault on our democracy perpetrated by this President is intensified and so is the immediate need for action.''

On Monday, Pelosi's leadership team will seek a vote on a resolution calling on Vice President Mike Pence and Cabinet officials to invoke the 25th Amendment, with a full House vote expected on Tuesday.

After that, Pence and the Cabinet would have 24 hours to act before the House would move toward impeachment.

A violent and largely white mob of Trump supporters overpowered police, broke through security lines and windows and rampaged through the Capitol on Wednesday, forcing lawmakers to scatter as they were finalizing Biden's victory over Trump in the Electoral College.