 President Joe Biden called his campaign quits yesterday afternoon after weeks of insisting he's running. Well, he's not now. The stunning announcement coming from a letter as we await an address to the nation from Joe later this week. Joe Biden now endorsing Kamala Harris to run in his place. She is set to give remarks from the White House a little later on today. But as Biden vows to stay in office, top Republicans question if he's not fit to run, is he fit to be president?