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 …

We examine a little-known restriction on high-skill immigration to the United States, the Exchange Visitor Skills List …

possibility that without tight restrictions on migration, migrants from poor countries could transmit low productivity ("A" or … embodied in migrants; assimilation, the degree to which migrants' productivity determinants become like natives' over time in …

economic theory raises in favor of international labor mobility, the nations of the world maintain restrictions on immigration … and show little inclination to liberalize these barriers significantly. Michael Walzer defends immigration restrictions as …. The type of segregation that Walzer defends, enforced at the national level through immigration restrictions, cuts workers …

well suited for these purposes. This chapter reviews the U.S. immigration policy environment that governs how skilled … migrants move to America for employment-based purposes. We discuss points of strain in the current system and potential policy …

We study the effects of technological change on immigration flows as well as the labor market outcomes of migrants … highly automated economy and the main destination for migrants in Europe. We apply an instrumental variable strategy and … identify how robots decrease the wage of migrants across all skill groups, while neither having a significant impact on the …

immigration to the United States. We approach this study from two different dimensions to document some of the forces driving this … change in the sex-ratio. The first approach, focusing on changes between birth cohorts, demonstrates that immigration is …

We review the growing literature on the political effects of immigration. After a brief summary of the economics of … immigration, we turn to the main focus of the paper: how immigrants influence electoral outcomes in receiving countries, and why …. We start from the "standard" view that immigration triggers political backlash and raises support for nativist, anti …

International migrants who seek protection also participate in the economy. Thus the policy of the United States to … prior estimates by including ripple effects beyond the wages earned or taxes paid directly by migrants. The sharp reduction … to migrants seeking protection, beyond humanitarian policy concerns, carry substantial economic costs. …