In this Aug. 30, 2019, photo, migrants, many who were returned to Mexico under the Trump administration’s “Remain in Mexico” program, wait in line to get a meal in an encampment near the Gateway International Bridge in Matamoros, Mexico. The program, officially called the Migrant Protection Protocols, was instituted by the U.S. and Mexico as a way of deterring migrants from crossing the border to seek asylum. (AP Photo/Veronica G. Cardenas)