Smuggling illicit drugs across the U.S border is a lucrative business. From hiding hundreds of pounds of cocaine or marijuana in vehicles, funneling it through tunnels under fenced areas or shipping it across the Florida coastline, drug dealers based in countries like Mexico and Cuba are pretty inventive in finding ways to get their contraband past border agents and into the United States. So inventive, in fact, that U.S. Customs and Border Protection reported that over the weekend, drug smugglers in Mexico used an air cannon to launch a pile of weed across the border into the U.S. According to...