By Francesca D’Annunzio and Avery Schmitz
This story is a collaboration between the Arizona Center for Investigative Reporting and the Texas Observer.
It was late afternoon when a small group traveling in a white Ford F-150 approached a humanitarian aid camp near Sasabe, a remote Arizona community along the U.S.-Mexico border. The visitors walked among tents, blue tarps and nonperishable food—surveying the camp and filming its occupants. The u…