With immigrant processing and holding centers overwhelmed, the administration is busing people hundreds of miles inland and releasing them at Greyhound stations and churches in cities like Albuquerque, San Antonio and Phoenix because towns close to the border already have more than they can handle.

Relief organizations in some cities are struggling to feed and house the migrants and warning that a public health crisis is taking shape, especially with sick infants and children among the many immigrant families who need medical attention.

“We’re asking volunteer doctors and nurses and community members to step up and do what the government should be doing. If this was a hurricane, FEMA would be on the ground helping,” said Jim Gannon, CEO and executive director of Catholic Charities in Albuquerque, New Mexico.