Inspired by Charles Tilly’s brilliant insights, Ernesto Castañeda has assembled a superb roster of scholars to explore links between migration and the creation and persistence of inequality. Timely and engaging, Immigration and Categorical Inequality makes a novel contribution to scholarly debates. It will also interest a broad audience eager to understand migration. —Viviana Zelizer, Princeton UniversityErnesto Castañeda's introductory tribute to the broad sweep of Charles Tilly’s scholarship, along with studies of migrant categorization, networks, and inequality, insightfully illuminate the relational processes of social closure based on nationality, race, and ethnicity. It is a "must read" for those interested in social exclusion mechanisms. —Hilary Silver, George Washington UniversityDrawing on Charles Tilly’s foundational theorizing on migration and social boundaries, the chapters in Immigration and Categorical Inequality draw on an array of methods and contexts to show how categories of race and nation become reified, reinterpreted, redrawn. The authors in this volume stand on the shoulders of a social science giant in Tilly to help us see further into how migration shapes life across the globe. —Tomás R. Jiménez, Stanford UniversityTilly’s relational perspective on human migration offers a fresh approach to understanding a social phenomenon affecting communities across the globe. The edited collection not only introduces Tilly’s relational approach to migration scholars but also offers new theoretical and empirical insights into contemporary processes of immigrant incorporation, social networks, group boundaries, and inequality. Castañeda’s collection successfully demonstrates the continued vitality of Tilly’s scholarship for contemporary and future migration scholars. — Ali Chaudhary, Rutgers University