text:  Biden's trip to Detroit caps off a busy week. The president hosted NATO leaders in Washington and held a rare press conference with reporters, one of the few times he's spoken at length without a teleprompter. Biden spoke evenly as he took questions and was firm that he is, quote, determined on running, though he did slip up early on and called Vice President Harris, Vice President Trump. The president said he would take another neurological test if his doctors said it was necessary