Congressional Research Service. May 10, 2012.
Foreign direct investment in the U.S. declined sharply after 2000, when a record $300 billion was invested in U.S. businesses and real estate. In 2010, according to U.S. Department of Commerce data, foreigners invested $236 billion in U.S. businesses and real estate. Foreign direct investments are highly sought after by many state and local governments that are struggling to create additional jobs in their localities. While some in Congress encourage such investment to offset the perceived negative economic effects of U.S. firms investing abroad, others are concerned about foreign acquisitions of U.S. firms that are considered essential to U.S. national and economic security.
http://www.fas.org/sgp/crs/misc/RS21857.pdf [PDF format, 11 pages].