From America's earliest days, when there was work to be done, businesses and the government brought workers to the job site to finish it. Chinese coolies built the Transcontinental Railroad. Poles, Czech and Slovaks built the U.S. steel industry. Jews filled New York's garment center.
Today it seems that rather than bringing workers to the jobs, more often the jobs are going to the workers. Outsourcing has become the preferred method of getting the work done for a broad swath of American manufacturing, technology and service sectors.