The impact of immigration on native earnings in the United States, 1940 to 1980.

"Using 1940 to 1980 census data, this study investigates the effect of immigration on the earnings of U.S. born citizens. A modified version of human capital, and the equilibrium model provide the theoretical framework. Results show that when we look at cross-sections, for every decade studied, except 1940, immigration had positive effects on the earnings of native born Americans. After controlling for possible simultaneity bias, and using panel regression analysis, the author found different results. Although not completely eliminated, the impact of immigration was substantially reduced."
(excerpt)