 President Biden is recovering from COVID at his home in Delaware and still insisting he will not leave the race. CBS's Willie James Inman is in Rehoboth Beach. CBS News has learned President Biden is deeply frustrated amid a push from within the Democratic Party to end his presidential bid. California Democrat Mark Tucano added his name to the growing list of at least three dozen Democrats who have publicly said Biden should step down. Some Democrats are supporting the president while pitching an alternative should he leave the race.