Migration is not merely the movement of people across borders; it is also a profoundly institutional and political process that reshapes states, societies, and the relationship between them. The Institutional Politics of Migration: Regimes, Policies, and Social Transformation examines migration through the interconnected lenses of political institutions, migration regimes, public policy, and social transformation. Moving beyond approaches that treat migration primarily as a demographic or humanitarian phenomenon, the book explores how states and institutions govern mobility, construct policy responses, and negotiate the political and social consequences of migration. Through a comparative and institutionally grounded perspective, it considers the interaction between migration policies, citizenship, labour markets, welfare arrangements, political structures, and changing societies. The book ultimately offers a framework for understanding migration not simply as a policy challenge, but as a transformative force situated at the intersection of institutions, politics, and society.