The power to round up thousands of Haitians at the border and fly them to Port-au-Prince “came in large part from an obscure, controversial policy called Title 42. Granted by the Centers for Disease Control and Prevention, it gives the federal government the power to block ‘non-essential’ travel at the border in the event of an emergency involving communicable diseases. The patrolmen on horseback who were photographed menacing migrants, Biden said, were ‘beyond an embarrassment.’ They were ‘simply not who we are.'” But Title 42 is who we are. Jonathan Blitzer in The New Yorker: How Biden Came to Own Trump’s Policy at the Border.