Donald Trump became the first sitting president in nearly a half-century at a regular-season NFL game, attending the Washington Commanders' 44-22 loss to the visiting Detroit Lions on Sunday. There were loud boos from some spectators when Trump was shown on the videoboard late in the first half. The jeering continued while Trump read an oath for members of the military to recite as part of an on-field enlistment ceremony during the break in the game.