This paper studies the impact of U.S. immigration barriers on global knowledge production. We present four key findings …. First, among Nobel Prize winners and Fields Medalists, migrants to the U.S. play a central role in the global knowledge …-histories of International Math Olympiad (IMO) medalists, we show that migrants to the U.S. are up to six times more productive …

-level administrative data - that large immigration flows since 2012 have had dampening effects on aggregate wage growth, as complementarity …

UK economy to the postaccession surge in immigration. Simulations show that immigration is likely to have positive …

and mid-1990s. Using a system of equations for unemployment, labor-force participation, the real wage, and the immigration … that of an increase in domestic labor-force participation. The composition of immigration flows matters, and the proportion …