The most harrowing story I’ve read in The Times in recent days was Miriam Jordan’s account of a car crash last month in Southern California involving a Ford Expedition that had come from Mexico, straight through a breach in the border wall. The Ford was crammed with 25 people when it hit a tractor-trailer rig on Route 115, 110 miles east of San Diego. “Few of the survivors have been able to describe what happened next,” Jordan writes. “The crunch of metal and glass, the bodies flung dozens of feet across the pavement. Twelve people died on the spot, a...