 We first heard about this story in 2015, while Marlon and I were on a reporting trip in Phoenix, Arizona. Head west on West Elm Street toward North 19th Avenue, then turn right onto North 19th Avenue. It was the height of summer. What is the temperature reading right now? It says 105 on the car. If we're to believe it, that's pretty hot. We'd been in touch with an immigrant advocacy group called Puente, and they invited us to their office.