Photos of migrant detention highlight Biden’s border secrecy

White House press secretary Jen Psaki speaks during a press briefing at the White House, Monday, March 22, 2021, in Washington. (AP Photo/Evan Vucci)

This March 20, 2021, photo provided by the Office of Rep. Henry Cuellar, D-Texas, 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 Rep. Henry Cuellar via AP)

WASHINGTON — President Joe Biden’s administration has tried for weeks to keep the public from seeing images such as those that emerged Monday showing immigrant children in U.S. custody at the border sleeping on mats under foil blankets, separated in groups by plastic partitions.