WASHINGTON - In what law enforcement officials describe as a new front in international smuggling, global traffickers and cartels are increasingly turning to a new source for couriers to smuggle drugs across international borders: vulnerable American older adults. The traffickers deceive seniors with promises of prizes or relationships, setting them up to unknowingly try to carry luggage filled with cocaine or other items through customs, hoping they will not arouse suspicions. Such cases have been seen in nearly a dozen foreign countries, officials say. Details of the smuggling and a counteroperation that officials called Operation Cocoon were disclosed by the Department of Homeland Security during a hearing on Wednesday before the Senate Special Committee on Aging. [continues 515 words]