Tempers flared in the U.S. Congress on Wednesday after its chief physician urged lawmakers to resume wearing masks to slow the spread of the highly contagious Delta variant of COVID-19. #COVID19 #DeltaVariant #NancyPelosi #KevinMcCarthy #News #Reuters Subscribe: Reuters brings you the latest business, finance and breaking news video from around the globe. Our reputation for… Continue reading Tempers flare in U.S. Congress as COVID-19 mask mandates return