The first impeachment of Donald Trump formally moves into its trial phase in the United States Senate.

Donald Trump, serving as the 45th president of the United States, was impeached for the first time on December 18, 2019. On that date, the House of Representatives adopted two articles of impeachment against Trump: abuse of power and obstruction of Congress. On February 5, 2020, the Senate voted to acquit Trump on both articles of impeachment.

The United States Senate is a chamber of the bicameral United States Congress; it is the upper house, with the U.S. House of Representatives being the lower house. Together, the Senate and House have the authority under Article One of the U.S. Constitution to pass or defeat federal legislation.

January 16 is the 16th day of the year in the Gregorian calendar; 349 days remain until the end of the year.