Most of the literature on how immigration affects the labor market focuses on the outcomes of natives in direct competition with immigrants. This paper reviews a growing literature on an alternative channel. Immigrants, particularly low-skilled women, are disproportionately represented in the...

This paper estimates the elasticity of substitution between capital and skill using variation across U.S. counties in immigration-induced skill-mix changes between 1860 and 1930. We find that capital began as a q-complement for skilled and unskilled workers, and then dramatically increased its...