Immigration reporter Daniel Gonzalez travels to the historic center of Mexicali to meet a “pollero,” a man who is paid to get migrants over the border fence and illegally into the United States.To read, watch and learn more on this topic, visit thewall.usatoday.com, or text the word “SMUGGLER” to our chatbot at 408-872-9255.This episode was recorded, edited and produced by Hannah Gaber, with field interviews and sound from David Wallace. Kaila White was our production manager. Our technical director was Nate Kelly. It was written by Daniel Gonzalez, Gustavo Solis, Michael Squires, Josh Susong and Nicole Carroll.