 The gunman's motives remaining a mystery. ABC's Jay O'Brien in Grand Rapids. Being treated for mild COVID symptoms, according to his doc, President Biden at home in Rehoboth Beach, Delaware, where ABC's Selena Wang is. As President Biden pledges to fight on, top leaders in his party already looking ahead to what could come next if he drops out. Sources tell me the president is angry that leaders of his own party are turning against him. Now more than three dozen Democrats in Congress are calling on Biden to drop out of the race