For Free Movement Brian Barry and Robert E. Goodin have assembled an international team of leading philosophers, economists, political theorists, and specialists in international relations to examine an issue that is increasingly coming to dominate work politics: the flow of people and money across national boundaries. More and more people would like to migrate, but find that every state places barriers in their way. At the same time, most governments not only permit but court foreign investment. Can this difference between the treatment of people and the treatment of money be justified? This unique book asks the question from the point of view of five different ethical perspectives: liberal egalitarianism, libertarianism, Marxism, natural law, and political realism. A concluding section compares the answers. Free Movement is of value to those with either a practical or theoretical interest in these issues, as well as those who wish to see how a variety of ethical traditions confront a common set of problems lying outside their usual scope.