This book has, alas, been in gestation for more than a decade, with work on it delayed by the birth of our son, two deanships, four academic moves (including two of the transcontinental sort), and a host of other intervening events. As a result, the number of people and institutions that have supported and contributed to the finished product is quite large, and reconstructing a truly comprehensive list is daunting and likely doomed to failures of omission. Nevertheless, I have been part of so many supportive academic communities, and so many generous colleagues have offered advice along the way, that it would be churlish not at least to try to acknowledge the many debts I owe. First, I have benefited greatly from my time at four different academic institutions while writing this book: the University of Connecticut School of Law, the Princeton University Program in Law and Public Affairs, the Sandra Day O’Connor College of Law at Arizona State University, and The George Washington University Law School. At each location, I received important research support as well as significant wisdom from colleagues, wisdom that in all cases has altered the shape of the finished product.