Migrants walk on a dirt road after crossing the U.S.-Mexico border, Tuesday, March 23, 2021, in Mission, Texas. The Biden administration says that it's working to address the increase in migrants coming to the border. (AP Photo/Julio Cortez)

A migrant man, center, holds a child as he looks at a U.S. Customs and Border Protection agent at an intake area after crossing the U.S.-Mexico border, early Wednesday, March 24, 2021, in Roma, Texas. The Biden administration says that it's working to address the increase in migrants coming to the border. (AP Photo/Julio Cortez)

Elmer Maldonado, left, a migrant from Honduras, helps feed his 1-year-old son at a shelter, Monday, March 22, 2021, in Harlingen, Texas. Maldonado spent a week in immigration custody with his 1-year-old son after crossing the Rio Grande through Texas to request asylum. (AP Photo/Julio Cortez)

Elmer Maldonado, 40, a migrant from Honduras, sleeps with his 1-year-old son at a shelter, Monday, March 22, 2021, in Harlingen, Texas. One night, they slept on the dirt under a bridge shivering from the cold temperatures at an intake site where large groups of migrants turn themselves in to Border Patrol officers. (AP Photo/Julio Cortez)

Travel documents for Elmer Maldonado, a migrant from Honduras, and his 1-year-old son are seen at a shelter where migrants stay before they take buses or flights to other U.S. destinations Monday, March 22, 2021, in Harlingen, Texas. Maldonado spent a week in immigration custody with his 1-year-old son after crossing the Rio Grande through Texas to request asylum. (AP Photo/Julio Cortez)

Migrant women carry children at an intake area after turning themselves in upon crossing the U.S.-Mexico border, early Wednesday, March 24, 2021, in Roma, Texas. The Biden administration says that it's working to address the increase in migrants coming to the border. (AP Photo/Julio Cortez)

A group of migrants rest on a gazebo at a park after the deportees from the U.S. were pushed by Mexican authorities off an area they had been staying after their expulsion, Saturday, March 20, 2021, in Reynosa, Mexico. The Biden administration says that it's working to address the increase in migrants coming to the border. (AP Photo/Julio Cortez)

Elmer Maldonado, top, a migrant from Honduras, hugs his 1-year-old son at a shelter, Monday, March 22, 2021, in Harlingen, Texas. They spent a week in immigration custody after crossing the Rio Grande through Texas to request asylum. His experience illustrates a cycle that is repeating itself thousands of times a week amid a dramatic rise in migrant children and families at the U.S.-Mexico border: They arrive in the middle of the night by the dozens and are kept at outdoor intake sites, then taken to overcrowded detention facilities well past the 72-hour court-imposed limit. (AP Photo/Julio Cortez)

A 1-year-old migrant from Honduras eats at a shelter, Monday, March 22, 2021, in Harlingen, Texas. The boy, who is traveling with his father, Elmer Maldonado, who says he spent a week in immigration custody with his 1-year-old son after crossing the Rio Grande through Texas to request asylum. (AP Photo/Julio Cortez)

Elmer Maldonado, a migrant from Honduras, holds the foot of his 1-year-old son at a shelter, Monday, March 22, 2021, in Harlingen, Texas. Maldonado spent a week in immigration custody with his 1-year-old son after crossing the Rio Grande through Texas to request asylum. (AP Photo/Julio Cortez)

A 4-year-old migrant boy sleeps next to his father at a shelter, Monday, March 22, 2021, in Harlingen, Texas. The Biden administration says that it's working to address the increase in migrants coming to the border. (AP Photo/Julio Cortez)

Migrants walk on a dirt road after crossing the U.S.-Mexico border, Tuesday, March 23, 2021, in Mission, Texas. The Biden administration says that it's working to address the increase in migrants coming to the border. (AP Photo/Julio Cortez)

A 4-year-old migrant boy sleeps next to his father at a shelter, Monday, March 22, 2021, in Harlingen, Texas. The Biden administration says that it's working to address the increase in migrants coming to the border. (AP Photo/Julio Cortez)

A migrant child sleeps on the shoulder of a woman at an intake area after turning themselves in upon crossing the U.S.-Mexico border, early Wednesday, March 24, 2021, in Roma, Texas. The Biden administration says that it's working to address the increase in migrants coming to the border. (AP Photo/Julio Cortez)

A U.S. Customs and Border Protection officer talks to migrants after they were detained and taken into custody, Sunday, March 21, 2021, in Abram-Perezville, Texas. The Biden administration says that it's working to address the increase in migrants coming to the border. (AP Photo/Julio Cortez)