This book covers the topics generally addressed in a Constitutional Law I course in law school: the federal judicial power, the powers of Congress, the authority of the President (and the separation of national powers), the structural limitations on the states, and an introduction to the Constitution's protection of individual rights. Along with excerpts from seminal Supreme Court opinions, it offers explanatory notes, a variety of problem sets, and several practice essay and final exam questions. It is suitable as a primary text or a study aid for law students, and it offers an accessible introduction to the subject for non-lawyers.