Teachers should be required to get COVID-19 vaccines, the head of the American Federation of Teachers said Sunday. The union currently favors vaccinations on a voluntary basis, but its president Randi Weingarten said her views have changed as COVID-19 case numbers have spiked nationwide. She’ll urge the group to revisit its stance when she meets with other leaders this week. “As a matter of personal conscience, I think that we need to be working with our employers, not opposing them, on vaccine mandates,” Weingarten told NBC’s “Meet the Press.” “The delta variants are alarming. And the spread ...