Sen. Lisa Murkowski, R-Alaska, said in a television interview that she is "disturbed" by Senate Majority Leader Mitch McConnell's coordination with President Trump and his staff on an impending impeachment trial. Bill Clark/CQ-Roll Call via Getty Images hide caption
President Trump is leaning in, attacking political opponents in deeply personal terms and setting records for rally length and the sheer volume of his tweets. Scott Olson/Getty Images hide caption
House Speaker Nancy Pelosi speaks with House Intelligence Committee Chairman Adam Schiff (right), House Foreign Affairs Committee Chairman Eliot Engel (left) and House Ways and Means Committee Chairman Richard Neal after the House voted to impeach President Trump on Dec. 18. Andrew Harnik/AP hide caption
Senate Majority Leader Mitch McConnell laughed Monday when asked about Democrats' decision to delay sending articles of impeachment to his chamber. The tension comes amid debate over whether the trial will include witnesses. Chip Somodevilla/Getty Images hide caption
President Trump speaks during a campaign rally in Michigan, where he came out swinging as the House voted to impeach him on Wednesday. Evan Vucci/AP hide caption
Joseph Maguire has been acting director of national intelligence since August — the longest the position has remained unfilled since its 2004 creation, which was prompted by the attacks of Sept. 11. Brendan Smialowski/AFP/Getty Images hide caption
House Speaker Nancy Pelosi, seen departing a press conference following the House vote Wednesday, said she was ready to send the articles of impeachment once she has more information about the contours of a Senate trial. Win McNamee/Getty Images hide caption
House Speaker Nancy Pelosi of California strikes the gavel after announcing the passage of article II of impeachment against President Trump on Wednesday. Patrick Semansky/AP hide caption
House Speaker Nancy Pelosi, D-Calif., walks to the House floor on Wednesday before the beginning of the debate over articles of impeachment. Patrick Semansky/AP hide caption
House Speaker Nancy Pelosi, D-Calif., holds hands with Rep. Debbie Dingell, D-Mich., as they walk to the chamber where the House begins debate on the impeachment charges against President Trump. J. Scott Applewhite/AP hide caption
Senate Majority Leader Mitch McConnell, R-Ky., leaves the chamber after criticizing the House Democrats' effort to impeach President Trump. J. Scott Applewhite/AP hide caption
"You are the ones bringing pain and suffering to our Republic for your own selfish personal, political, and partisan gain," President Trump said of Democrats in a letter to House Speaker Nancy Pelosi on Tuesday. Above, Trump greets Guatemalan President Jimmy Morales at the White House on Tuesday. Brendan Smialowski/AFP via Getty Images hide caption
House Judiciary Committee Chairman Jerry Nadler speaks to the media after the committee voted on the two articles of impeachment against President Trump on Dec. 13. Mark Wilson/Getty Images hide caption
House Judiciary Chairman Jerry Nadler, D-N.Y., speaks to the media on Friday. His committee has released a report on the articles of impeachment against President Trump, ahead of a vote by the full House. Saul Loeb/AFP via Getty Images hide caption
The House Judiciary Committee on Friday approved two articles of impeachment against President Trump. Evan Vucci/AP hide caption