SAN DIEGO — A 25-year-old U.S. citizen has been charged with using a drone to smuggle more than 13 pounds of methamphetamine from Mexico by drone, an unusually large seizure for what is still a novel technique to bring illegal drugs into the United States, authorities said Friday. Jorge Edwin Rivera told authorities that he used drones to smuggle drugs five or six times since March, typically delivering them to an accomplice at a nearby gas station in San Diego, according to a statement of probable cause.