Alva Review-Courier -

SAN BENITO, Texas (AP) — On a recent day in a remodeled brick church in the Rio Grande Valley, a caregiver tried to soothe a toddler, offering him a sippy cup. The adult knew next to nothing about the little 3-year-old whose few baby words appeared to be Portuguese. Shelter staff had tried desperately to find his family, calling the Brazilian consulate and searching Facebook.

Nearby, infants in strollers were rolled through the building, pushed by workers in bright blue shirts lettered “CHS,” short for Comprehensive Health Services, Inc., the private, for-profit company paid by the U.S. govern...