U.S. Border Patrol agents attempt to maintain order during a surge of migrants across the Rio Grande River into Del Rio, Texas.

A U.S. Border Patrol officer cuts off the way of a migrant asylum seeker as he is trying to return to the United States along the Rio Grande River after having crossed from the United States into Mexico to buy food, as seen from Ciudad Acuna, Mexico September 19, 2021.

Daniel Becerril/Reuters