The Senate impeachment trial of President Donald Trump — only the third impeachment trial in US history — ended with Trump's acquittal on February 5.

The trial began January 21 as the senators, who served as jurors, were sworn in. John Roberts, the chief justice of the United States, presided over the trial.

Trump's attempts to pressure Ukraine to investigate Hunter Biden and Joe Biden, his potential political rival, were at the center of the President's impeachment trial.

Trump has repeatedly made unfounded and false claims to allege that the Bidens acted improperly in Ukraine. There is no evidence of wrongdoing by either Joe or Hunter Biden.

On December 18, the Democratic-controlled House voted almost entirely along party lines to charge Trump with abuse of power and obstruction of Congress.

On February 5, the Republican-controlled Congress acquitted Trump on both articles of impeachment. The vote was 52-48 on abuse of power, with Republican Sen. Mitt Romney joining the 47 Democrats in voting guilty. All 53 Republican senators voted not guilty on obstruction of Congress.

Senate Majority Leader Mitch McConnell leaves the Senate chamber after the vote on February 5.
Senate Majority Leader Mitch McConnell leaves the Senate chamber after the vote on February 5.
J. Scott Applewhite/AP
Chief Justice John Roberts ends the impeachment trial after Trump was acquitted.
Chief Justice John Roberts ends the impeachment trial after Trump was acquitted.
Senate TV
Sen. Mitt Romney heads to the Senate floor to vote on February 5. Romney announced, in a stirring and emotional speech on the Senate floor, that he would break with his party and vote to convict Trump on abuse of power. <a href="index.php?page=&url=https%3A%2F%2Fwww.cnn.com%2Fpolitics%2Flive-news%2Ftrump-impeachment-trial-02-05-20%2Fh_9012bb2f158be39a61f8b013ebd5ddaa" target="_blank">He is the first senator in US history</a> to vote to convict a president from the same party in an impeachment trial.
Sen. Mitt Romney heads to the Senate floor to vote on February 5. Romney announced, in a stirring and emotional speech on the Senate floor, that he would break with his party and vote to convict Trump on abuse of power. He is the first senator in US history to vote to convict a president from the same party in an impeachment trial.
Jonathan Ernst/Reuters
People walk in front of the US Capitol on the day of the vote.
People walk in front of the US Capitol on the day of the vote.
Alex Edelman/Getty Images
Chief Justice John Roberts addresses the Senate on Friday, January 31, after it voted to block any witnesses from being called in the trial. <a href="index.php?page=&url=https%3A%2F%2Fwww.cnn.com%2F2020%2F01%2F31%2Fpolitics%2Fsenate-impeachment-trial-last-day%2Findex.html" target="_blank">The move</a> marked the beginning of the trial's end.
Chief Justice John Roberts addresses the Senate on Friday, January 31, after it voted to block any witnesses from being called in the trial. The move marked the beginning of the trial's end.
Senate TV
After a week of sitting silently, <a href="index.php?page=&url=https%3A%2F%2Fwww.cnn.com%2F2020%2F01%2F29%2Fpolitics%2Fsenate-impeachment-trial-question-time%2Findex.html" target="_blank">senators got their chance to speak in the impeachment trial</a> on January 29. They submitted questions that would be read aloud by Chief Justice John Roberts and directed at one or both of the legal teams. In this image from video, a Senate page brings the first question to Roberts.
After a week of sitting silently, senators got their chance to speak in the impeachment trial on January 29. They submitted questions that would be read aloud by Chief Justice John Roberts and directed at one or both of the legal teams. In this image from video, a Senate page brings the first question to Roberts.
Senate TV/AP
A Senate aide displays the question card that was being used by senators during the trial.
A Senate aide displays the question card that was being used by senators during the trial.
Steve Helber/AP
Lev Parnas, an indicted associate of Rudy Giuliani with ties to Ukraine, looks at his phone as he waits in the office of Senate Minority Leader Chuck Schumer on January 29. Parnas' work in Ukraine with Giuliani, the President's personal attorney, <a href="index.php?page=&url=https%3A%2F%2Fwww.cnn.com%2F2020%2F01%2F16%2Fpolitics%2Flev-parnas-cnn-interview%2Findex.html" target="_blank">stood at the center of the impeachment inquiry.</a>
Lev Parnas, an indicted associate of Rudy Giuliani with ties to Ukraine, looks at his phone as he waits in the office of Senate Minority Leader Chuck Schumer on January 29. Parnas' work in Ukraine with Giuliani, the President's personal attorney, stood at the center of the impeachment inquiry.
Patrick Semansky/AP
House impeachment manager Sylvia Garcia walks from the podium after answering a question during the impeachment trial on January 29.
House impeachment manager Sylvia Garcia walks from the podium after answering a question during the impeachment trial on January 29.
Senate TV/AP
Schumer, reflected in a TV camera lens, speaks during a news conference on January 28.
Schumer, reflected in a TV camera lens, speaks during a news conference on January 28.
Drew Angerer/Getty Images
Trump's personal lawyer Jay Sekulow and White House Counsel Pat Cipollone arrive at the Senate chamber on January 28.
Trump's personal lawyer Jay Sekulow and White House Counsel Pat Cipollone arrive at the Senate chamber on January 28.
Drew Angerer/Getty Images
US Sen. Dianne Feinstein carries a notepad with her as she arrives at the Senate chamber on January 28.
US Sen. Dianne Feinstein carries a notepad with her as she arrives at the Senate chamber on January 28.
Drew Angerer/Getty Images
Trump attorney Ken Starr speaks at the trial on January 27, the second day of the defense's opening arguments. Starr became a household name in the late 1990s as the then-independent counsel overseeing the investigation that led to Bill Clinton's impeachment.
Trump attorney Ken Starr speaks at the trial on January 27, the second day of the defense's opening arguments. Starr became a household name in the late 1990s as the then-independent counsel overseeing the investigation that led to Bill Clinton's impeachment.
Senate TV/AP
White House Counsel Pat Cipollone, center left, talks with US Rep. Mark Meadows as he prepares to leave a meeting room with the rest of President Trump's defense team on January 24.
White House Counsel Pat Cipollone, center left, talks with US Rep. Mark Meadows as he prepares to leave a meeting room with the rest of President Trump's defense team on January 24.
Samuel Corum/Getty Images
Staff members load boxes of Hershey's candy onto carts outside the office of Sen. Pat Toomey on January 24. Hershey's sent the candy to resupply Toomey's desk on the Senate floor, known as the candy desk, for the impeachment trial.
Staff members load boxes of Hershey's candy onto carts outside the office of Sen. Pat Toomey on January 24. Hershey's sent the candy to resupply Toomey's desk on the Senate floor, known as the candy desk, for the impeachment trial.
Andrew Caballero-Reynolds/AFP/Getty Images
US Reps. Adam Schiff, Hakeem Jeffries, Jerry Nadler and other House managers meet in their anteroom before walking to the Senate floor on January 23.
US Reps. Adam Schiff, Hakeem Jeffries, Jerry Nadler and other House managers meet in their anteroom before walking to the Senate floor on January 23.
Erin Schaff/The New York Times/Redux
Sen. Lindsey Graham speaks with reporters in the Senate subway before the impeachment trial resumes January 23.
Sen. Lindsey Graham speaks with reporters in the Senate subway before the impeachment trial resumes January 23.
Drew Angerer/Getty Images
Sen. Tom Udall looks over notes before a news conference January 23.
Sen. Tom Udall looks over notes before a news conference January 23.
Drew Angerer/Getty Images
Night falls on the US Capitol on January 22.
Night falls on the US Capitol on January 22.
J. Scott Applewhite/AP
House Intelligence Chairman Adam Schiff speaks during impeachment proceedings in the Senate on January 22.
House Intelligence Chairman Adam Schiff speaks during impeachment proceedings in the Senate on January 22.
Senate TV
From left, Senate Minority Leader Chuck Schumer and Sens. Patty Murray, Sheldon Whitehouse and Chris Murphy hold a news conference at the Capitol on January 22.
From left, Senate Minority Leader Chuck Schumer and Sens. Patty Murray, Sheldon Whitehouse and Chris Murphy hold a news conference at the Capitol on January 22.
Chip Somodevilla/Getty Images
House impeachment managers prepare to speak to the media on January 22. From top left are Adam Schiff, Jason Crow, Hakeem Jeffries, Val Demings, Zoe Lofgren, Sylvia Garcia and Judiciary Chairman Jerry Nadler.
House impeachment managers prepare to speak to the media on January 22. From top left are Adam Schiff, Jason Crow, Hakeem Jeffries, Val Demings, Zoe Lofgren, Sylvia Garcia and Judiciary Chairman Jerry Nadler.
Jacquelyn Martin/AP
Attorney Jay Sekulow speaks with reporters alongside other members of President Donald Trump's defense team as they arrive for the Senate impeachment trial on January 22.
Attorney Jay Sekulow speaks with reporters alongside other members of President Donald Trump's defense team as they arrive for the Senate impeachment trial on January 22.
Saul Loeb/AFP/Getty Images
Roberts presides over the Senate impeachment trial on January 21.
Roberts presides over the Senate impeachment trial on January 21.
Senate TV
McConnell arrives at the Capitol on January 21.
McConnell arrives at the Capitol on January 21.
Andrew Harrer/Bloomberg/Getty Images
A member of McConnell's staff talks to the media as Sen. Tom Cotton makes his way to the Senate floor.
A member of McConnell's staff talks to the media as Sen. Tom Cotton makes his way to the Senate floor.
Caroline Brehman/CQ-Roll Call/Getty Images
Schiff, at the microphone, addresses the media on January 21 with fellow House impeachment managers.
Schiff, at the microphone, addresses the media on January 21 with fellow House impeachment managers.
Tom Williams/CQ-Roll Call/Getty Images
Staff members carry boxes of binders to Schumer's office on January 21.
Staff members carry boxes of binders to Schumer's office on January 21.
Drew Angerer/Getty Images
Schumer speaks to reporters on January 21.
Schumer speaks to reporters on January 21.
Julio Cortez/AP
Rep. Mark Meadows speaks to reporters on January 21.
Rep. Mark Meadows speaks to reporters on January 21.
Tom Brenner/Reuters
Chief Justice Roberts arrives at the Capitol on January 21.
Chief Justice Roberts arrives at the Capitol on January 21.
Cliff Owen/AP
Capitol employees wind the historic Ohio Clock on January 21.
Capitol employees wind the historic Ohio Clock on January 21.
Joshua Roberts/Reuters
The Senate wing of the Capitol is seen in Washington on January 21, the day the impeachment trial began in earnest.
The Senate wing of the Capitol is seen in Washington on January 21, the day the impeachment trial began in earnest.
Andrew Harrer/Bloomberg/Getty Images
Chief Justice Roberts swears in members of the Senate for Trump's impeachment trial. The senators <a href="index.php?page=&url=https%3A%2F%2Fwww.cnn.com%2F2020%2F01%2F16%2Fpolitics%2Fsenate-impeachment-trial-starts%2Findex.html" target="_blank">conducted the ceremonial functions</a> of the impeachment trial on January 16.
Chief Justice Roberts swears in members of the Senate for Trump's impeachment trial. The senators conducted the ceremonial functions of the impeachment trial on January 16.
United States Senate
Chuck Grassley, the Senate's president pro tempore, <a href="index.php?page=&url=https%3A%2F%2Fwww.cnn.com%2Fvideos%2Fpolitics%2F2020%2F01%2F16%2Fchief-justice-john-roberts-sworn-in-for-impeachment-trial-full-vpx.cnn" target="_blank">swears in Roberts</a> as the presiding officer for the impeachment trial on January 16.
Chuck Grassley, the Senate's president pro tempore, swears in Roberts as the presiding officer for the impeachment trial on January 16.
Senate TV/AP