WATCH LIVE: Impeachment Trial Gets Underway In The Senate

In this screengrab taken from a Senate Television webcast, Supreme Court Chief Justice John Roberts (L) administers the oath to swear in U.S. Senators during pre-trial impeachment proceedings against U.S. President Donald Trump in the Senate.
Photo credit Senate Television via Getty Images

WATCH LIVE: Coverage as the Senate Impeachment trial of President Trump gets underway