U.S. House Speaker Nancy Pelosi (D-CA) arrives at the U.S. Capitol in Washington, U.S. December 18, 2019.

U.S. House Speaker Nancy Pelosi (D-CA), surrounded by aides and reporters, walks to the House floor at the U.S. Capitol in Washington, U.S. December 18, 2019.

House Speaker Nancy Pelosi (D-CA) is seen on a jumbotron outside ABC News studios speaking to the U.S. House of Representatives during the session to discuss rules ahead of a vote on two articles of impeachment against U.S. President Donald Trump, at Times Square in New York City, New York, U.S., December 18, 2019.

House Intelligence Committee Chairman Rep. Adam Schiff (D-CA) speaks ahead of a vote on two articles of impeachment against U.S. President Donald Trump on Capitol Hill in Washington, U.S., in a still image from video December 18, 2019. House TV via REUTERS.

U.S. House Speaker Nancy Pelosi (D-CA) arrives at the U.S. Capitol in Washington, U.S. December 18, 2019.

Activists rally in support of the impeachment and removal of U.S. President Donald Trump on Capitol Hill in Washington, U.S., December 18, 2019.

Rep. Rashida Tlaib speaks ahead of a vote on two articles of impeachment against U.S. President Donald Trump on Capitol Hill in Washington, U.S., in a still image from video December 18, 2019. House TV via REUTERS.

Rep John Ratcliffe (R-TX) speaks ahead of a vote on two articles of impeachment against U.S. President Donald Trump on Capitol Hill in Washington, U.S., in a still image from video December 18, 2019. House TV via REUTERS.

Rep. Val Demings (D-FL) speaks ahead of a vote on two articles of impeachment against U.S. President Donald Trump on Capitol Hill in Washington, U.S., in a still image from video December 18, 2019. House TV via REUTERS.

Rep. Louie Gohmert (R-TX) speaks ahead of a vote on two articles of impeachment against U.S. President Donald Trump on Capitol Hill in Washington, U.S., in a still image from video December 18, 2019. House TV via REUTERS.

Activists rally in support of the impeachment of U.S. President Donald Trump on Capitol Hill in Washington, U.S., December 18, 2019.

U.S. Rep. Elissa Slotkin (D-MI) speaks to reporters at the U.S. Capitol prior to votes in the U.S. House of Representatives on two articles of impeachment against U.S. President Donald Trump in Washington, U.S., December 18, 2019.

The U.S. Capitol dome is seen prior to votes in the U.S. House of Representatives on two articles of impeachment against U.S. President Donald Trump at the U.S. Capitol in Washington, U.S., December 18, 2019.

Rep. John Lewis (D-GA) speaks ahead of a vote on two articles of impeachment against U.S. President Donald Trump on Capitol Hill in Washington, U.S., in a still image from video December 18, 2019. House TV via REUTERS.

Rep. Diana Degette, member presiding over the U.S. House of Representatives, pounds the gavel to open the session to discuss rules ahead a vote on two articles of impeachment against U.S. President Donald Trump on Capitol Hill in Washington, U.S., in a still image from video December 18, 2019. House TV via REUTERS.

A man wears a lapel pin reading "Impeach" as activists rally in support of the impeachment of U.S. President Donald Trump on Capitol Hill in Washington, U.S., December 18, 2019.

House Speaker Nancy Pelosi (D-CA) speaks ahead of a vote on two articles of impeachment against U.S. President Donald Trump on Capitol Hill in Washington, U.S., in a still image from video December 18, 2019. House TV via REUTERS.

Rep. Louie Gohmert (R-TX), who returned to the podium, is gaveled by the presiding Democrat, Rep. Diana DeGette after House Judiciary Committee Chairman Jerrold Nadler accused Gohmert of spouting "Russian propaganda on the floor of the House" ahead of a vote on two articles of impeachment against U.S. President Donald Trump on Capitol Hill in Washington, U.S., in a still image from video December 18, 2019. House TV via REUTERS.

U.S. President Donald Trump gestures to the news media as he departs for campaign travel to Michigan from the the South Lawn of the White House in Washington, U.S., December 18, 2019.

U.S. Speaker of the House Nancy Pelosi (D-CA) smiles as she bangs the gavel to adjourn the House of Representatives after representatives voted in favor of two counts of impeachment against U.S. President Donald Trump in the House Chamber of the U.S. Capitol in Washington, U.S., December 18, 2019.

House Majority Leader Steny Hoyer (D-MD) speaks to reporters inside Statuary Hall prior voting in the U.S. House of Representatives on two articles of impeachment against U.S. President Donald Trump at the U.S. Capitol in Washington, U.S., December 18, 2019.

U.S. Speaker of the House Nancy Pelosi (D-CA) wields the gavel as she presides over the House of Representatives approving two counts of impeachmeant against U.S. President Donald Trump in the House Chamber of the U.S. Capitol in Washington, U.S., December 18, 2019.

House Speaker Nancy Pelosi (D-CA) is followed by members of the news media inside Statuary Hall prior to votes in the U.S. House of Representatives on two articles of impeachment against U.S. President Donald Trump on Capitol Hill in Washington, U.S., December 18, 2019.

Republican staff counsel Stephen Castor walks prior to votes in the U.S. House of Representatives on two articles of impeachment against U.S. President Donald Trump on Capitol Hill in Washington, U.S., December 18, 2019.

Rep. Alexandria Ocasio-Cortez speaks before the U.S. House of Representatives meets to vote on two articles of impeachment against U.S. President Donald Trump on charges of abuse of power and obstruction of Congress for his dealings with Ukraine, on Capitol Hill in Washington, U.S., December 18, 2019.

A man holds a sign in support of U.S. President Donald Trump before an impeachment vote on Capitol Hill in Washington, U.S., December 18, 2019.

U.S. Rep. Mark Meadows (R-NC) walks past a reporter at the U.S. Capitol prior to votes in the U.S. House of Representatives on two articles of impeachment against U.S. President Donald Trump in Washington, U.S., December 18, 2019. Image for illustrative purposes.

U.S. Rep. Steve Scalise (R-LA) prepares for a TV interview inside Statuary Hall prior voting in the U.S. House of Representatives on two articles of impeachment against U.S. President Donald Trump at the U.S. Capitol in Washington, U.S., December 18, 2019.

Rep. Jim Jordan (R-OH) speaks ahead of a vote on two articles of impeachment against U.S. President Donald Trump on Capitol Hill in Washington, U.S., in a still image from video December 18, 2019. House TV via REUTERS.

U.S. President Donald Trump reacts during a campaign rally in Battle Creek, Michigan, U.S., December 18, 2019. Image used for illustrative purpose.