ur government has no idea what the identity of the aliens that remain in the country are.
Meese III, Edwin, Carafano, James, Spalding, Matthew, and Rosenzweig, Paul. Alternatives to Amnesty: Proposals for Fair and Effective Immigration Reform. The Heritage Foundation. Backgounder No. 1858. June 2, 2005.
Borjas, George. "Increasing the Supply of Labor Through Immigration Measuring the Impact on Native-born Workers." Center for Immigration Studies. May, 2004.