THE MEXICAN, Juan Medina Gonzales, was on time, as usual. He pulled the mid-sized RV to a stop just shy of the house. Karey hadn't expected the RV. Typically, Juan dropped off around thirty to forty pounds of marijuana a week–-once he'd fronted him two hundred pounds—always arriving in an aging Toyota Corolla. But Karey wasn't concerned. The twenty-four-year-old had only been selling weed for a few months. He mostly sold to friends, and friends of friends. Karey didn't consid