books.google.com - This book examines the theory, law, and reality of preemption choice. The Constitution's federalist structures protect states' sovereignty but also create a powerful federal government that can preempt and thereby displace the authority of state and local governments and courts to respond to a social...http://books.google.com/books/about/Preemption_Choice.html?id=wMhvp81kvUQC&utm_source=gb-gplus-sharePreemption Choice