TOPPENISH, Wash. - After 55 years of packing Eastern Washington asparagus, the Del Monte Foods factory here moved operations to Peru last year, eliminating 365 jobs. The company said it could get asparagus cheaper and year-round there. As the global economy churns, nearly every sector has a story about U.S. jobs landing on cheaper shores. But what happened to the U.S. asparagus industry is rare, the farmers here say, because it became a casualty of the government's war on drugs. To reduce the flow of cocaine into the United States by encouraging farmers in Peru to grow food instead of...