Imagine that you are concerned by anti-competitive legislation motivated by ethnocentrism. In a democracy such as the U.S., one must consider, when discussing whether or not to allow immigration that improves efficiency while also depressing wages, not just the direct economic effects, but also the political externalities caused by enfranchising those who may have rather distinct voting patterns. We must consider the likelihood that Mexicans will themselves pursue policies nativist from their perspective, when the shoe is on the other foot, so to speak. To do otherwise would be myopic.