This paper studies the impact of U.S. immigration barriers on global knowledge production. We present four key findings … developing countries. Fourth, certain 'push' incentives that reduce immigration barriers-by addressing financing constraints for …

While anecdotal evidence suggests that interest groups play a key role in shaping immigration policy, there is no … combining information on the number of temporary work visas with data on lobbying activity associated with immigration. We find … robust evidence that both pro- and anti-immigration interest groups play a statistically significant and economically …

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