John Burnett

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President Trump's "zero tolerance" practice of 100 percent prosecution was modeled after an earlier get-tough policy on the Southwest border called Operation Streamline. It was supposed to streamline the process for punishing unauthorized immigrants and deter people from jumping the border.

The Berduo family traveled nearly 2,000 miles from Guatemala to the international bridge between Matamoros, Mexico, and Brownsville, Texas, but they could go no further.

Under a new policy, federal border agents stationed in the middle of international bridges are turning away asylum seekers like the Berduos, telling them there is no room in U.S. Customs and Border Protection stations for them.

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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The shooting death of an undocumented woman at the hands of a U.S. Border Patrol agent in Rio Bravo, Texas, near Laredo, Wednesday is ratcheting up tensions along the U.S.-Mexico border.

According to a statement released by Customs and Border Protection, a lone agent was responding "to a report of illegal activity by Centeno Lane ... where he discovered a group of illegal aliens" just after noon.

The statement adds:

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