This treatise provides a detailed, up-to-date, and comprehensive analysis of American constitutional law. It examines the issues that are studied and litigated today and discusses the origins of judicial review and federal jurisdiction, the sources of national authority, the growth of federal commerce and fiscal powers, and the limits on state laws that burden interstate commerce. It analyzes individual liberties and due process, including freedom of speech and religion, federal powers to enforce the Bill of Rights, and limitations on the jurisdiction of federal courts. Finally, it examines the separation of powers, including the restrictions on the foreign affairs power.