ABSTRACT
This chapter argues that libertarians should endorse open borders. It sketches a presumptive libertarian case against immigration restrictions and responds to common objections to open borders. The chapter explains the argument that states have rights to freedom of association or ownership rights that permit them to exclude foreigners. It then considers the objection that immigration would expand the welfare state or undermines institutions that libertarians favor. The chapter evaluates that libertarians should endorse civil disobedience to immigration laws as a practical way of resisting these laws. Libertarianism is a family of different views that endorse civil rights, such as freedom of speech and association, as well as an expansive set of economic liberties. Libertarians think that people have rights to freedom of association and rights to own and use property. Some libertarians worry that open immigration would have bad consequences. Suppose, though, that immigration increases state redistribution and that these alternative policies are infeasible for some reason.
