The discovery of at least 53 dead inside a sweltering tractor trailer in Texas is putting a new light on an old problem: human smuggling across borders. Here’s what’s causing the problem. And why fixing it is a challenge. In this latest case, the bodies were found on the southwest side of San Antonio along a dirt road next to a railroad track. The migrants were mostly from Mexico and other nations like Guatemala and Honduras. And the victims included children. Read more: https://wapo.st/3Nu4nPK. Subscribe to The Washington Post on YouTube: https://wapo.st/2QOdcqK

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