In Constitutional Law for a Changing America: Institutional Powers and Constraints, bestselling authors Lee Epstein, Kevin T. McGuire, and Thomas G. Walker show students how political factors influence judicial decisions and shape the development of constitutional law. The Twelfth Edition, updated with additional material such as recent court rulings, more than 500 supplemental cases, and greater coverage of executive, legislative, and judicial power, facilitates a deeper understanding of how the U.S. Constitution defines what institutions can and cannot do. This book is ideal for Constitutional Law courses in the two-semester sequence that covers powers and constraints. For courses that cover both rights and liberties and the separation of powers in one semester, see Constitutional Law for a Changing America: A Short Course.