"In The Border Within, Watson and Thompson masterfully distill decades of economics research and interweave it with stories of real people. Anyone looking for a clear understanding of issues surrounding undocumented immigration in the United States, delivered in engaging prose, would do well to read this. It is a terrific book that gets the economics research right, makes it readable, and puts a human face on it. That is hard to do."–Kristin F. Butcher, director of the Center on Children and Families, Cabot Family Chair, and senior fellow in Economic Studies, Brookings Institution, and the Marshall I. Goldman Professor of Economics, Wellesley College