Federalism: A Reference Guide to the United States Constitution provides a thorough examination of this significant and distinctive part of the U.S. constitutional system, documenting its role in major domestic constitutional controversies in every period of American history.

Although the book is organized historically rather than doctrinally, the marked evolutions of important areas of doctrine are addressed over time. These subject areas include the scope of Congress's power under the Commerce Clause, the scope of Congress's powers under the Fourteenth and other...