U.S. employers can check whether the workers they hire are legally eligible for employment using E-Verify, a free electronic system run by the federal government. We use confidential data from the U.S. Department of Homeland Security to provide the first examination of whether increases in...

The U.S. economy has long relied on immigrant workers, many of them unauthorized, yet estimates of the inflow of unauthorized workers and the determinants of that inflow are hard to come by. This paper provides estimates of the number of newly arriving unauthorized workers from Mexico, the...

Previous research has reached mixed conclusions about the effect of higher levels of immigration on the wages of natives. This paper reexamines this question using data from the Current Population Survey and the Immigration and Naturalization Service and focuses on differential effects by skill...

This paper examines whether allowing certain undocumented immigrants to legalize their status leads to additional illegal immigration. The authors focus on the effects of the 1986 Immigration Reform and Control Act, which granted amnesty to over three million undocumented immigrants. They find...

This paper examines the effect of changes in migration determinants on the skill level of undocumented immigrants from Mexico. The authors focus on the effect of changes in economic conditions, migrant networks, and border enforcement on the educational attainment of Mexican-born men who cross...

Immigration policy reform has reached an impasse because of disagreement over whether to create a pathway to legal permanent residence and eventual U.S. citizenship for unauthorized immigrants. The United States first — and last — offered a large-scale amnesty as part of the Immigration...