HOUSTON (AP) — President Joe Biden’s administration has reopened a tent facility to house up to 700 immigrant teenagers after they cross the U.S.-Mexico border unaccompanied by a parent, a sign of growing worries about how children are treated in government custody. U.S. Health and Human Services said Monday that the first teens arrived at Carrizo Springs, Texas, which was converted two years ago into a holding facility under former President Donald Trump. The facility has been closed since July 2019.