This paper takes economic principles commonly applied to international trade and applies them to trade in labor services. This analysis derives the optimal immigration policy for a variety of welfare objectives, including both economic efficiency and distributive justice. The analysis suggests...

Starting in 1985, Colombia experienced gradual trade liberalization that culminated in the drastic tariff reductions of 1990-91. This paper exploits these trade reforms to investigate the relationship between protection and wages. The focus of the analysis is on relative wages, defined as...