WASHINGTON (AP) – 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. The official says the Centers for Disease Control and Prevention has determined the mandate is no longer necessary. The official said Friday the CDC will reevaluate the need for the testing requirement every 90 days and it could be reinstated if a troubling new variant emerges. Airline and tourism groups had been pressing the administration to eliminate the testing requirement.