U.S. Senator John Neely Kennedy (R-LA) walks to the Senate floor for the start of the Senate impeachment trial of U.S. President Donald Trump in Washington, U.S., January 21, 2020.

U.S. Senate Majority Leader Mitch McConnell (R-KY) addresses the U.S. Senate about rules for the impeachment trial of U.S. President Donald Trump in this frame grab from video shot in the Senate Chamber at the U.S. Capitol in Washington, U.S., January 21, 2020.

U.S. Supreme Court Chief Justice John Roberts presides over the start of the U.S. Senate impeachment trial of U.S. President Donald Trump as the House impeachment managers sit to one side and the president's legal team sits on the other side in this frame grab from video shot in the U.S. Senate Chamber at the U.S. Capitol in Washington, U.S., January 21, 2020.

Senator Mike Lee (R-UT) arrives for the reconvening of the impeachment trial of U.S. President Donald Trump on Capitol Hill in Washington, U.S., January 21, 2020.

Senator Mitt Romney (R-UT) speaks to journalists on the sidelines of the impeachment trial of U.S. President Donald Trump on Capitol Hill in Washington, U.S., January 21, 2020.

Chief Justice of the United States John Roberts presides during opening arguments in the U.S. Senate impeachment trial of U.S. President Donald Trump in this frame grab from video shot in the U.S. Senate Chamber at the U.S. Capitol in Washington, U.S., January 21, 2020.

News reporters standby in a restricted area as Senate staff members walk into the Senate Chamber during U.S. President Donald Trump's Senate Impeachment trial in Washington, U.S., January 21, 2020.

Senator Kelly Loeffler (R-GA) arrives for the reconvening of the impeachment trial of U.S. President Donald Trump on Capitol Hill in Washington, U.S., January 21, 2020.

Senate Majority Leader Mitch McConnell (R-KY) arrives for the first day of the Senate impeachment trial of U.S. President Donald Trump on Capitol Hill in Washington, U.S., January 21, 2020.

Pam Bondi, former Florida Attorney General and now special White House advisor, arrives on Capitol Hill with U.S. President Donald Trump's legal team for the start of the president's U.S. Senate impeachment trial in Washington, U.S., January 21, 2020.

U.S. Senator Kamala Harris (D-CA) walks to the Senate floor for the start of the Senate impeachment trial of U.S. President Donald Trump in Washington, U.S., January 21, 2020.

U.S. Supreme Court Chief Justice John Roberts arrives on Capitol Hill to preside over opening arguments in the U.S. Senate's impeachment trial of President Donald Trump on Capitol Hill in Washington, U.S., January 21, 2020.

The U.S. Capitol building exterior is seen from the Russel Senate Office Building as members of the Senate begin the impeachment trial of President Donald Trump in Washington, U.S., January 21, 2020. Image used for illustrative purpose

White House counsel Pat Cipollone speaks during opening arguments in the U.S. Senate impeachment trial of U.S. President Donald Trump in this frame grab from video shot in the U.S. Senate Chamber at the U.S. Capitol in Washington, U.S., January 21, 2020.

Employees with the Architect of the Capitol wind the Ohio Clock on the first day of the Senate impeachment trial of U.S. President Donald Trump on Capitol Hill in Washington, U.S., January 21, 2020.

Protesters hold signs outside of the U.S. Capitol ahead of the impeachment trial of President Donald Trump in Washington, U.S., January 21, 2020.

Lead manager House Intelligence Committee Chairman Adam Schiff (D-CA) speaks during opening debate at the start of the U.S. Senate impeachment trial of U.S. President Donald Trump in this frame grab from video shot in the U.S. Senate Chamber at the U.S. Capitol in Washington, U.S., January 21, 2020.

U.S. Senator Susan Collins (R-ME) walks to the Senate floor for the start of the Senate impeachment trial of U.S. President Donald Trump in Washington, U.S., January 21, 2020.

President Donald Trump's personal attorney Jay Sekulow is searched with a magnetometer by U.S. Capitol Police as he arrives with his son Jordan Sekulow and other fellow members of the Trump legal team ahead of the start of President Trump's Senate impeachment trial in Washington, U.S., January 21, 2020.

U.S. Democratic presidential candidate Senator Elizabeth Warren (D-MA) arrives at the U.S. Senate ahead of opening arguments in U.S. President Donald Trump's Senate impeachment trial on Capitol Hill in Washington, U.S., January 21, 2020.

House impeachment manager Rep. Zoe Lofgren (D-CA) speaks during opening arguments in the U.S. Senate impeachment trial of U.S. President Donald Trump in this frame grab from video shot in the U.S. Senate Chamber at the U.S. Capitol in Washington, U.S., January 21, 2020.

Former Senator Jeff Flake (R-AZ) walks through the Ohio Clock Corridor off the U.S. Senate floor during the opening arguments of President Donald Trump's Senate impeachment trial on Capitol Hill in Washington, U.S., January 21, 2020.

The U.S. Senate votes to table an amendment by U.S. Senate Minority Leader Chuck Schumer (D-NY) seeking documents and evidence from the White House during the U.S. Senate impeachment trial of U.S. President Donald Trump in this frame grab from video shot in the U.S. Senate Chamber at the U.S. Capitol in Washington, U.S., January 21, 2020.

U.S. President Donald Trump gestures as he holds a news conference at the 50th World Economic Forum (WEF) in Davos, Switzerland, January 22, 2020.

Senate Majority Leader Mitch McConnell (R-KY) walks to his office from the Senate Chamber during a break in the opening arguments of U.S. President Donald Trump's Senate impeachment trial on Capitol Hill in Washington, U.S., January 21, 2020.

Senator Tim Scott (R-SC) arrives for the reconvening of the impeachment trial of U.S. President Donald Trump on Capitol Hill in Washington, U.S., January 21, 2020. Image for illustrative purposes.

Senate Minority Leader Chuck Schumer (D-NY) speaks during debate ahead of the reconvening of the U.S. Senate impeachment trial of U.S. President Donald Trump in this frame grab from video shot in the U.S. Senate Chamber at the U.S. Capitol in Washington, U.S., January 21, 2020.

Senator Lisa Murkowski (R-AK) speaks with reporters on the first day of the impeachment trial of U.S. President Donald Trump on Capitol Hill in Washington, U.S., January 21, 2020.

Sen. Joseph Manchin, D-WV pauses outside the Senate Floor during a brief recess of the Senate impeachment trial of President Trump in Washington, U.S., January 21, 2020.

The U.S. Capitol stands as evening falls on the first day of the impeachment trial of U.S. President Donald Trump in Washington, U.S., January 21, 2020.

Rep. Val Demings (D-FL) listens to fellow House Managers Rep. Adam Schiff (D-CA) (not pictured) during a news conference near the Senate Subway to discuss the Senate impeachment trial of President Trump in Washington, U.S., January 22, 2020.

Staffers carry boxes of documents to Senate Minority Leader Chuck Schumer's (D-NY) office on the first day of the impeachment trial of U.S. President Donald Trump on Capitol Hill in Washington, U.S., January 21, 2020.

Chief Justice of the United States John Roberts arrives to preside over the Senate impeachment trial of President Donald Trump in Washington, U.S., January 21, 2020.

Members of television media report from the Russel Senate Office Building as members of the U.S. Senate begin the impeachment trial of President Donald Trump in Washington, U.S., January 21, 2020.

U.S. Senate Minority Leader Chuck Schumer (D-NY) speaks to members of the news media during the Senate Impeachment trial of U.S. President Donald Trump on Capitol Hill in Washington, U.S., January 21, 2020.

Senator Joe Manchin (D-WV) arrives for the reconvening of the impeachment trial of U.S. President Donald Trump on Capitol Hill in Washington, U.S., January 21, 2020.