(原始内容存档于2017-05-12). Stock, Margaret; Eastman, John. Five Questions on ImmigrationReform. Federalist Society. 2 May 2006 [20 August 2008]. (原始内容存档于2009年8月17日)
Dividing lines: the politics of immigration control in America(2002)p. 71 Claudia Golden, "The Political Economy of Immigration Restriction in the United States