The increase in Mexican migration to the United States in recent years constitutes
one of the most divisive issues in the US-Mexican relationship. The
phenomenon is especially interesting and puzzling if considered that it
contradicts the traditional economic models that consider trade and migration
to be perfect substitutes. According to these models, increased trade
should reduce the incentives for migration from poor to relatively wealthier
countries. So why has this not been the case between Mexico and the US;
two countries that have fairly liberalized their trade since 1993 under...