This last group of essays in the Migration and Refugee series focuses on "immigrant" policy, examining the institutions, laws, and social practices that are designed to facilitate the integration of immigrants and refugees into their receiving countries. The scope of the collection is highly interdisciplinary, drawing on the research of demographers, lawyers, and sociologists. It is also explicitly comparative, underscoring the similarities and differences in how the United States and Germany conceive of the role of immigrants and how the two nations incorporate them into civil and political society.