In this July 9, 2019, file photo, staff escort immigrants to class at the U.S. government's newest holding center for migrant children in Carrizo Springs, Texas. The Trump administration will make a case in court to end a longstanding settlement governing detention conditions for immigrant children, including how long they can be held by the government. A hearing is scheduled before a federal judge Friday, Sept. 27, in Los Angeles over the so-called Flores settlement. (AP Photo/Eric Gay, File)