Migration flows are shaped by a complex combination of self-selection and out-selection mechanisms. In this paper, the authors analyze how existing diasporas (the stock of people born in a country and living in another one) affect the size and human-capital structure of current migration flows....

This paper reviews the existing literature on the impact of migrants networks on the patterns of international migration. It covers the theoretical channels at stake in the global effect of the networks. It identifies the key issues, namely the impact on size, selection and concentration of the...

This paper examines the economic impact of the second great immigration wave (1945-2000) on the US economy. Contrary to recent studies, we estimate that immigration induced important net gains and small redistributive effects among natives. Our analysis relies on a computable general equilibrium...

Immigrants currently account for 3.3% of the world's population. We know that migration is demographically important, but what are its implications for the labour market, public finance and political landscape? To answer these questions, this report draws on recent literature on the economic and...