The Migration Reader introduces the key articles and documents that analyze the complex phenomenon of transnational migration and the challenges it poses for contemporary societies, states, and international relations. Enhanced by the editors' commentary, the selections identify concepts and trends in international migration, review the historical origins of contemporary migration and refugee regimes, consider immigration politics and policies, and explore migration in a global context. The result is an intellectual window through which students can better understand the changes occurring in the international environment and in state-society relations within both affluent and less-developed countries.