Last summer when we were both at Mises University, Peter Quiñones and I sat down in the studio and talked about immigration for a full hour. I think we’ve provided enough to annoy both open borders people and hard-core restrictionists. I cover the horribleness of border guards, the unconvincing nature of economic arguments against immigration, Ludwig von Mises’s highly practical views of immigration policy, and the real political and sociological issues potentially raised by large-scale migration.