John Burnett

Updated June 15 at 12:50 p.m. ET

This is the largest government-contracted migrant youth shelter in the country: Casa Padre, a former Walmart supercenter converted into living, recreational and dining quarters for nearly 1,500 immigrant boys.

Shelter managers took reporters on a tour of the facility in Brownsville, Texas, on Wednesday, amid criticism over the Trump administration's "zero tolerance" policy that has led to separating migrant families who crossed the border illegally.

Three young Guatemalan women went on trial this week at the red-rock federal courthouse in Alpine, Texas. It's about 70 miles from the spot in the border town of Presidio where they waded across the Rio Grande three weeks ago, with their eight- and nine-year-old sons in tow.

One of the women, Emilia Figueroa, testified during the trial that she believed if she brought her boy with her, the two of them would be released to live in the United States until their immigration court date.

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AUDIE CORNISH, HOST:

White House chief of staff John Kelly struck a nerve when he told NPR that many undocumented immigrants who come to the U.S. don't assimilate well because they are rural, lack education and don't speak English.

Within hours of the interview last week, the Internet and cable news lit up. Conservatives who applaud President Trump's immigration clampdown gave Kelly kudos; immigrant advocates branded it a racist rant.

The number of immigrants illegally crossing the southern border plummeted when Donald Trump took office. But the number is again on the rise. In response, the president plans to deploy up to 4,000 National Guard troops.

In West Texas, immigrant shelters are overflowing with recent arrivals and some migrants are trying more dangerous routes to evade capture.

The intake room at Annunciation House, an immigrant shelter in downtown El Paso, is packed these days. Parents and squirming children sit with their travel bags. They are the aggravations of Donald Trump.

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