 Live from NPR News in Washington, I'm Windsor Johnston. More than 30 congressional Democrats are urging President Biden to drop his bid for re-election. Biden has so far resisted those calls, claiming that he's the only candidate who can beat Republican Donald Trump in November. NPR's Deepa Shibharam reports the president is recovering from a case of COVID at his home in Delaware, but is gearing up to return to the campaign trail next week.