In this March 21, 2021, file photo, a migrant child peeks through the U.S.-Mexico border metal wall as a group of migrants is processed and taken into custody while trying to sneak across the border in Abram-Perezville, Texas. For the third time in seven years, U.S. officials are scrambling to handle a dramatic spike in children crossing the U.S.-Mexico border alone, leading to a massive expansion in emergency facilities to house them as more kids arrive than are being released to close relatives in the United States. AP Photo/Julio Cortez, File