 Biden is spending the weekend at his Delaware home recovering from COVID. His doctor says he took his sixth dose of the antiviral Paxlovid this morning and continues to experience hoarseness and a cough. Dr. Kevin O'Connor said the president has one of the new variants of the virus responsible for about a third of new infections in the U.S. Meanwhile, more of his fellow Democrats are urging him to withdraw his bid for reelection. NPR's Ron Elving has more.