Hundreds of children wait in Border Patrol facility in Texas

People who've been taken into custody related to cases of illegal entry into the U.S. sit in one of the cages at a facility on Sunday in McAllen, Texas. (U.S. Customs and Border Protection's Rio Grande Valley Sector via AP)

McALLEN, Texas — Inside an old warehouse in South Texas, hundreds of children wait in a series of cages created by metal fencing. One cage had 20 children inside. Scattered about are bottles of water, bags of chips and large foil sheets intended to serve as blankets.