Drug Trafficking: Major US-Mexico border tunnel highlights seasonal trend in increasingly popular smuggling tack

AP/Washington Post: "The investigation into the largest marijuana bust at a cross-border tunnel followed a familiar timeline. It began in May and ended in November.

The secret passage linking warehouses in San Diego and Tijuana — equipped with a hydraulic lift, electric rail carts and a wooden staircase — highlights an emerging seasonal trend. For three years, authorities have found sophisticated tunnels on the U.S.-Mexico border shortly before the winter holidays in what officials speculate is an attempt by drug smugglers to take advantage of Mexico’s fall marijuana harvest." read more