This chapter provides an overview of the book. I discuss the history of migration to Western Europe and why it became such a dramatic political issue. I then outline the motivation for studying support for immigration, which has been understudied relative to all the research on opposition to immigration. Finally, I discuss the overarching framework for the book, arguing we need to go beyond cosmopolitanism to understand support for immigration. That argument operates on three levels. First, we need to go beyond cosmopolitan demography to understand who supports immigration. Second, we need to go beyond the stereotype of superficial cosmopolitanism. Third, and finally, we need to go beyond embedding support for immigration in the cosmopolitan worldview.