"In 2002, the town of Galesburg, a slowly declining Rustbelt city of 34,000 in western Illinois, learned that it would soon lose its largest factory, a Maytag refrigerator plant that had anchored Galesburg's social and economic life for half a century. Workers at the plant earned $15.14 an hour, had good insurance, and were assured a solid retirement. In 2004, the plant was relocated to Reynosa, Mexico, where workers spent 13-hour days assembling...