Texas is the deadliest state for undocumented immigrants trying to make it from Central and South America to the United States. Hundreds are dying in the wilderness. The majority don't die at the border, but 70 miles north, in Brooks County, where U.S. Border Patrol has a checkpoint. To get around the checkpoint, migrants must hike through the backcountry, often dying of heatstroke.
The Texas Observer and the Guardian US have paired up to do a four-part, multimedia story about the crisis in Texas.