President Donald Trump went through a “very concerning” period Friday and the next 48 hours “will be critical” in his care as he battles the coronavirus at a hospital, White House chief of staff Mark Meadows said Saturday. Meadows’ comments contradicted the rosy assessment of Trump’s condition offered by his staff and doctors, who took pains not to reveal the president had received supplemental oxygen at the White House before his hospital admission. NBC New York's Jonathan Dienst reports. #DonaldTrump #WalterReed #Coronavirus