This is an accessible constitutional law book suitable for undergraduate courses. Chapters begin with explanatory info, and feature shorter cases, interactive questions throughout chapters and the historical context of founding legal principles and theories of constitutional interpretation. Both the Bill of Rights and other Constitutional Amendments are presented with through explanations and reference to historical legal issues, with a focus on the structural and institutional powers of the constitution. Volume I includes: development of judicial review; doctrine of implied powers; Congress; the Presidency; Foreign-Affairs Powers; the Commerce Clause; Taxing and Spending Powers; and the Protection of Rights Guaranteed in the Body of the Constitution.