House Speaker Nancy Pelosi says President Donald Trump should immediately be removed from office or Congress may proceed to impeach him.

Pelosi on Thursday joined those calling on the Cabinet to invoke the 25th Amendment to force Trump from office. It came a day after a violent mob of Trump supporters stormed the Capitol, forcing the building into lockdown. Trump called them ``very special'' people and said he loved them.

She said at the Capitol: ``The president of the United States incited an armed insurrection against America.''

Pelosi says he could do further harm to the country: ``Any day can be a horror show for America.``

Democrats and some Republicans want Trump removed before his term ends on Jan. 20 with Democrat Joe Biden's inauguration.

The 25th Amendment allows for the vice president and a majority of the Cabinet to declare the president unfit for office. The vice president then becomes acting president

Pelosi also says she's seeking the resignation of Capitol Police Chief Steven Sund.

The California Democrat also said Thursday that House Sergeant-at-Arms Paul Irving, another key security official, had already submitted his resignation. He reports directly to Pelosi, while Sund answers to both House and Senate.

Incoming Senate Majority Leader Chuck Schumer said he'll fire the Senate Sergeant-at-Arms Michael Stenger.

Lawmakers have mixed praise for the Capitol Police with harsh criticism for the outfit, which was overwhelmed by Wednesday's mob and unprepared for it.