This analysis follows 40 years of growth and policy change on the U.S.-Mexico shared border. This research finds that from 1970-2010 the Mexican municipios on the border did not move toward convergence with their northern neighbors in terms of GDP per capita. However, there is evidence of regional income convergence within each individual country. This analysis examines multiple interconnected determinants of GDP per capita such as the global competiveness of manufacturing in the Mexico border region, long-term factors which effect human capital such as the quality of education, and the consequences of technological progression on the wages of unskilled workers.