Last week at New York's JFK Airport, a small 5-year-old girl emerged from a commercial flight arriving from Colombia. Traveling alone, the little girl lugged two suitcases through customs before an inspector took her aside to perform a routine check. The officer discovered more than a kilo of heroin packed in her suitcases. "Sending a 5-year-old girl alone on a plane to smuggle heroin represents a new low - even for drug traffickers," Customs special agent Joe Webber said. The little girl - believed by U.S. customs to be the youngest child discovered smuggling drugs - is now in...