Nixon resigned before impeachment, after articles were filed for obstruction of justice, abuse of power, and contempt of Congress. Soon after, Gerald Ford gave him a full pardon for any crimes he may have committed against the United States while President, in the interest of healing national division (and maybe to preserve the integrity of the office).
Assuming Mr. Biden wins, and a "witch hunt" ensues, should he pardon Mr. Trump much like his predessor?