A theory of international migration flows: United States immigration from Mexico

The relevance of concepts of equilibrium to the analysis of migration between Mexico and the United States is examined. A theoretical model applicable to this type of international migration is first developed. The next section "presents some limited and tentative empirical observations and suggests the knowledge which might be needed for a more precise understanding of the utility differentials between countries which give rise to migration, legal or illegal." A final section is devoted to the policy implications of this approach to migration analysis.