As Tara Watson (Williams College) and Kalee Thompson highlight in their forthcoming book 'Unauthorized: The Human and Economic Costs of Immigration Enforcement in America,' "the American narrative celebrates the idea of immigrants arriving to build a better life in a land of abundance. Yet, Americans have always struggled with immigration, particularly as it intersects with race, poverty, and economic opportunity." In this episode of EconoFact Chats, Tara discusses her and Kalee's forthcoming book, focusing on what we know about undocumented immigration in the U.S., where immigrants come from now, whether that's different from what we've seen in the past, and whether border enforcement is central to controlling illegal immigration.