John Burnett

For the first time this year, the number of migrants taken into custody by immigration authorities after crossing the Southwest border dropped in June.

The Department of Homeland Security announced on Tuesday that about 104,000 migrants were taken into custody after crossing the Southwest border — a 28% drop from May.

Migrant flows typically slow down in the hotter summer months, and federal officials credited Mexico with doing more to secure its borders and stop migrants from crossing into the U.S.

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The Department of Homeland Security's Office of Inspector General is warning about "dangerous overcrowding" in Border Patrol facilities in the Rio Grande Valley of South Texas.

In a strongly worded report, the inspector general said the prolonged detention of migrants without proper food, hygiene or laundry facilities — some for more than a month — requires "immediate attention and action."

The Department of Health and Human Services is dramatically expanding its network of child shelters across the country in order to avoid the kind of scandal that occurred in Clint, Texas, where scores of immigrant children were warehoused together.

"There are too many kids in Border Patrol stations right now, and we're working to get them out of those stations and into HHS care," says Mark Weber, HHS deputy assistant secretary for public affairs.

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Updated at 5:07 p.m. ET

The acting commissioner of U.S. Customs and Border Protection plans to step down in the coming weeks, according to two agency officials, amid a public furor over the treatment of migrant children in U.S. facilities.

John Sanders is expected to make his resignation effective July 5, according to the officials, who spoke to NPR on condition of anonymity because an official announcement had not been made to agency employees.

Updated at 3:45 p.m. ET Saturday

U.S. Immigration and Customs Enforcement is expected to begin arresting and deporting thousands of migrant families in 10 cities across the country, according to sources familiar with the planned raids.

The roundups are targeted at recently arrived migrant families whose cases were fast-tracked by the Justice Department after being sent final deportation orders from a judge and failing to show up for court.

Thousands of asylum-seekers from Central America, Cuba and elsewhere have massed in Mexican border cities, waiting and hoping to be granted legal entry to the United States. They have created a humanitarian crisis, and they're growing impatient.

Responding to that crisis, the Trump administration threatened last week to impose tariffs to pressure Mexico to block the streams of migrants who are crossing its southern border bound for the United States.

Central American migrants who were detained in a Border Patrol holding facility in McAllen, Texas, described atrocious living conditions and widespread sickness.

U.S. Customs and Border Protection shut down its largest migrant processing center in South Texas for 24 hours on Tuesday after 32 detainees got sick with the flu. This is the same location where a 16-year-old Guatemalan boy became sick, and died Monday at another Border Patrol station.

Updated 4:45pm E.T.

U.S. Customs and Border Protection temporarily suspended intake at the McAllen Central Processing Center on Tuesday, the largest migrant processing center in South Texas, after the outbreak of what the agency calls "a flu-related illness."

It is the same facility where a 16-year-old Guatemalan boy became ill last week, and died after he was transferred to another Border Patrol station.

Editor's note: This story contains descriptions and photos of human remains that some readers may find disturbing.

Border Patrol agents steer their all-terrain buggy through dense brush on the historic King Ranch. They're looking for a human skeleton.

They spotted bones earlier in the day when they were chasing a group of migrants through this pasture, and they marked the GPS coordinates. Now they're returning with a sheriff's deputy.

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A Guatemalan toddler died in a hospital Tuesday night, just over a month after he and his mother crossed the southwest border and were apprehended, according to the Guatemalan consul in Del Rio, Texas.

The family entered the U.S. from the border city of Juárez, Mexico, in early April. They were apprehended on April 3 on the north bank of the Rio Grande in central El Paso, Texas, according to U.S. Customs and Border Protection.

Guatemalan Consul Tekandi Paniagua told NPR that the 2½-year-old boy "had a high fever [and] difficulty breathing."

For people familiar with the lonesome highways of far West Texas and New Mexico, it's an unusual sight: The ubiquitous Border Patrol checkpoints are all closed. Last month, Homeland Security shifted the checkpoint agents to the border to help process the crush of migrant asylum-seekers.

Otero County, N.M., is so alarmed by the possibility of illegal narcotics flowing north unchecked that it has declared a local state of emergency.

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