A recent escalation of Texas’ Operation Lone Star is facing renewed scrutiny. The Justice Department plans to sue the state over a floating barrier in the Rio Grande. It’s also investigating accusations from a state trooper that agents were told to push a group of migrants - including children - back into the water. What is happening at the southern border? And how did it get so dire?  

Guest: Ben Wermund, Washington correspondent for the Houston Chronicle and San Antonio Express-News

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Podcast production by Elena Schwartz, Paige Osburn, Anna Phillips, Madeline Ducharme and Rob Gunther.
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