International trade and migration are two important dimensions of globalization. Although governments have been very willing to open their borders to trade, they have not been so liberal in their immigration policies. It has been suggested, however, that a causal positive link might exist...

The Roma are the largest ethnic minority in Europe—as well as one of the most disadvantaged. A triple vicious circle is at play: Substandard socio-economic outcomes reinforce each other; they fuel negative attitudes and perceptions, leading to ill-chosen policies; and segmentation is...

Border enforcement of immigration laws attempts to raise the costs of illegal immigration, while interior enforcement also lowers the benefits. Border and interior enforcement therefore reduce the net benefits of illegal immigration and should lower the probability that an individual will decide...

Empirical studies have found that achieving superdiversity—a substantial increase in the scale and scope of minority ethnic and immigrant groups in a region—can provide certain economic benefits, such as higher levels of worker productivity and innovation. Other studies have found that these...

Immigration is one of the most important policy debates in Western countries. However, one aspect of the debate is often mischaracterized by accusations that higher levels of immigration lead to higher levels of crime. The evidence, based on empirical studies of many countries, indicates that...