Migration dominates contemporary politics across the world, and there has been a corresponding surge in political theorizing about the complex issues that it raises. In a world in which borders seem to be solidifying while the number of displaced people soars, how should we think about the political and ethical implications of human movement across the globe? In this book, Gillian Brock, one of the leading figures in the field, lucidly introduces and explains the important historical, empirical, and normative context necessary to get to grips with the major contemporary debates. She examines issues ranging from the permissibility of controlling borders and the criteria that states can justifiably use to underpin their migration management policies through to questions of integration, inclusion, and resistance to unjust immigration laws. Migration and Political Theory is essential reading for any student, scholar, or general reader who seeks to understand the political theory and ethics of migration and movement in the twenty-first century.