 ABC News. I'm Chuck Severson. President Biden's COVID symptoms have improved significantly, according to his doctor, who in his latest update makes no mention of the president's cough or hoarseness as he has before. Joining those urging the president to drop out of the race, a powerful independent who caucuses with Democrats, West Virginia Senator Joe Manchin. It's concerning when you watch him. I'm concerned about the president's health and well-being. I really am.