Children are detained in a Customs and Border Protection temporary overflow facility in Donna, Texas on March 20. President Biden’s administration faces mounting criticism for refusing to allow outside observers into facilities that are detaining thousands of migrant children.

This March 20, 2021 photo provided by the Office of Congressman Henry Cuellar, (TX-28), shows detainees in a Customs and Border Protection (CBP) temporary overflow facility in Donna, Texas. President Joe Biden’s administration faces mounting criticism for refusing to allow outside observers into facilities where it is detaining thousands of immigrant children. (Photo courtesy of the Office of Congressman Henry Cuellar via AP)