The revival of international migration in the last fifteen years has spurred economists to more systematically study their determinants and consequences. This contribution expands the existing literature in two directions. First we focus on the European Union as a whole and compare it to the US...

A series of recent influential papers has emphasized that in order to identify the wage effects of immigration one needs to consider national effects by skill level. The criticism to the so called „area approach“ is based on the fact that native workers are mobile and would eliminate, in the...