Factbox: Abuse of power, obstruction - the charges against Trump explained

Dec 14, 2019; Philadelphia, PA, USA; President Donald Trump watches the action during the second half of the Army-Navy game at Lincoln Financial Field. Mandatory Credit: Danny Wild-USA TODAY Sports

(Reuters) - The U.S. House of Representatives will vote on Wednesday to impeach President Donald Trump on charges that he abused the power of his office and obstructed Congress in its investigation of his dealings with Ukraine.

The following defines the two charges, or "articles of impeachment," based on historical background.