National Guard members sleep in the Capitol Vistor's Center on Capitol Hill before Democrats begin debating one article of impeachment against U.S. President Donald Trump at the U.S. Capitol, in Washington, U.S., January 13, 2021.

A staff member moves Nancy Pelosi's lectern, as Democrats debate one article of impeachment against U.S. President Donald Trump, at the U.S. Capitol, in Washington, U.S. January 13, 2021.

U.S. Representative Marjorie Taylor Greene (R-GA) wears a mask reading "Censored" as she walks to the House floor during debate on the second impeachment of President Donald Trump at the U.S. Capitol in Washington, U.S. January 13, 2021.

National Guard members sleep, before Democrats begin debating one article of impeachment against U.S. President Donald Trump at the U.S. Capitol, in Washington, U.S., January 13, 2021.

U.S. House Speaker Nancy Pelosi (D-CA) walks to her office, as Democrats debate one article of impeachment against U.S. President Donald Trump at the U.S. Capitol, in Washington, U.S. January 13, 2021.

National Guard members assemble in the Capitol Visitor's Center on Capitol Hill before Democrats begin debating one article of impeachment against U.S. President Donald Trump at the U.S. Capitol, in Washington, U.S., January 13, 2021.

National Guard members rest and use their phones, before Democrats begin debating one article of impeachment against U.S. President Donald Trump at the U.S. Capitol, in Washington, U.S., January 13, 2021.

U.S. House Speaker Nancy Pelosi (D-CA) presides over the vote to impeach President Donald Trump for a second time, a week after his supporters stormed the Capitol building, on the floor of the House of Representatives in Washington January 13, 2021.

A member of the National Guard mounts guard near the U.S. Capitol building, as the House of Representatives debates impeaching U.S. President Donald Trump a week after his supporters stormed the Capitol building in Washington, U.S., January 13, 2021.

U.S. House Speaker Nancy Pelosi (D-CA) speaks to members of the House as she presides over the vote to impeach President Donald Trump for a second time, a week after his supporters stormed the Capitol building, on the floor of the House of Representatives in Washington January 13, 2021.

National Guard members sleep in the Dirksen Senate Office Building before Democrats begin debating one article of impeachment against U.S. President Donald Trump at the U.S. Capitol, in Washington, U.S., January 13, 2021.

U.S. Speaker of the House Nancy Pelosi (D-CA) presides as the House of Representatives votes to impeach U.S. President Donald Trump for inciting insurrection, a week after a mob of his supporters stormed the U.S. Capitol, in this framegrab from video shot inside the House Chamber of the Capitol in Washington, U.S., January 13, 2021. House TV via REUTERS

A protest sign reading "Impeach" is seen on Black Lives Matter Plaza near the White House one week after rioters stormed the U.S. Capitol building in Washington, U.S., January 13, 2021.

Laurie Arbeiter protests against U.S President Donald Trump near the U.S. Capitol building, as the House of Representatives debates impeaching U.S. President Donald Trump a week after his supporters stormed the Capitol building in Washington, U.S., January 13, 2021.

U.S. House Majority Leader Steny Hoyer (D-MD) speaks during debate ahead of a House of Representatives vote on impeachment against U.S. President Donald Trump for his role in last week's siege of the U.S. Capitol, formally charging Trump with inciting insurrection in a speech shortly before the riot, in this frame grab from video shot inside the House Chamber of the Capitol in Washington, U.S., January 13, 2021. House TV via REUTERS

U.S. Rep. Ilhan Omar (D-MN) speaks to the media at the U.S. Capitol, as Democrats debate one article of impeachment against U.S. President Donald Trump, in Washington, U.S. January 13, 2021.

An aide for U.S. Representative Henry Cuellar (D-TX) carries pizza to give to National Guard soldiers as he walks with Cuellar in a subway underneath the U.S. Capitol during debate on the second impeachment of President Donald Trump in Washington, U.S. January 13, 2021.

Laurie Arbeiter protests against U.S President Donald Trump near the U.S. Capitol building, as the House of Representatives debates impeaching U.S. President Donald Trump a week after his supporters stormed the Capitol building in Washington, U.S., January 13, 2021.

U.S. Rep. Marjorie Taylor Greene (R-GA) speaks during debate ahead of a House of Representatives vote on impeachment against U.S. President Donald Trump for his role in last week's siege of the U.S. Capitol, formally charging Trump with inciting insurrection in a speech shortly before the riot, in this frame grab from video shot inside the House Chamber of the Capitol in Washington, U.S., January 13, 2021. House TV via REUTERS

National Guard members walk and take pictures as Democrats debate one article of impeachment against U.S. President Donald Trump at the U.S. Capitol, in Washington, U.S., January 13, 2021.

A Marine guards the entrance to the West Wing of the White House, signaling that U.S. President Donald Trump is in the Oval Office, as the House of Representatives impeaches Trump for the second time in Washington, U.S., January 13, 2021.

A TV screen in the White House briefing room shows the U.S. House of Representatives impeaching U.S. President Donald Trump for the second time, in Washington, U.S., January 13, 2021.