In January 2023, U.S. federal agents raided the home of a Tucson maintenance worker who had a side hustle hauling packages across the border to Mexico.They estimate that over the previous two years, the gray-bearded courier had ferried about 7,000 kilos of fentanyl-making chemicals to an operative of the Sinaloa Cartel. That’s 15,432 pounds, sufficient to produce 5.