Passengers get a COVID-19 test at Heathrow Airport in London, Nov. 29, 2021. The Biden administration is lifting its requirement that international air travelers to the U.S. take a COVID-19 test within a day before boarding their flights, easing one of the last remaining government mandates meant to contain the spread of the coronavirus. A senior administration official says the mandate expires Sunday at 12:01 a.m. Eastern time. The official says the Centers for Disease Control and Prevention has determined that it’s no longer necessary. (AP Photo/Frank Augstein, File)