A migrant child looks through the U.S.-Mexico border wall as a group is processed and taken into custody while trying to sneak across the border, Sunday, March 21, 2021, in Abram-Perezville, Texas. A surge of migrants on the Southwest border has the Biden administration on the defensive. The head of Homeland Security acknowledged the severity of the problem but insisted it's under control and said he won't revive a Trump-era practice of immediately expelling teens and children. (AP Photo/Julio Cortez)