Dr. Joe Salerno will address the annual Students for Liberty conference (mises.org/LibertyCon19) this week on the topic of his seminal article, "Mises on Nationalism, the Right of Self Determination, and the Problem of Immigration" (mises.org/MisesNationalism). While Mises had plenty to say about nation states and liberalism, his wrote relatively little about immigration per se. Dr. Salerno and Jeff Deist discuss Mises's conception of nation and state, breakaway movements, borders, and self-determination in polyglot societies. Nationalism and immigration are the most contentious political issues today, and Mises's perspectives remain remarkably fresh and relevant.