Elliot Spagat FILE - In this March 30, 2021, file photo, young minors lie inside a pod at the Donna Department of Homeland Security holding facility, the main detention center for unaccompanied children in the Rio Grande Valley run by U.S. Customs and Border Protection (CBP), in Donna, Texas. U.S. authorities say they picked up nearly 19,000 children traveling alone across the Mexican border in March. It's the largest monthly number ever recorded and a major test for President Joe Biden as he reverses many of his predecessor's hardline immigration tactics. (AP Photo/Dario Lopez-Mills, Pool, File) April 08, 2021 - 9:03 PM BROWNSVILLE, Texas - Paying a smuggler, Edgar Mejia could afford to take only one child with him to the United States. He chose his 3-year-old âwarriorâ son, leaving his 7- and 12-year-olds with their mother in Honduras.