How the US plans to reunite more than 1,000 families that remain separated at the border

Summary: The White House announced Monday it would reunite four families that U.S. officials separated at the southern border during Donald Trump's presidency. Over 5,500 children were taken from their parents to deter illegal immigration since July, 2017. Department of Homeland Security Secretary Alejandro Mayorkas joins Judy Woodruff to discuss the move, which he has called "Just the beginning." PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders