Do the American courts restrain the President from committing illegal and unconstitutional acts? If so, how? These are the fundamental questions which are answered here through a systematic and comprehensive analysis of the opinions and decisions of the courts themselves. As Clinton Rossiter, author of "The American Presidency," points out, "Too many books on the Presidency deal with the powers of this great office, too few with the restraints that fix its place in our system of government. Students of the system will be grateful to Professor Schubert for this tough-minded, even-tempered, exhaustive study of a neglected aspect of the Presidency." Professor Schubert analyzes hundreds of judicial cases, both federal and state, involving challenges to the legality of presidential action. The period covered is the entire lifetime of the republic and the material is arranged according to the President's major institutional roles, those of chief administrator, chief of state, commander in chief, and chief magistrate. There are chapters on presidential management of public personnel and the public domain, his control of foreign relations and the tariff, his military powers, enemy aliens, the presidential seizure power and other emergency powers, legal sources of presidential power, due process in presidential lawmaking, and the scope of judicial review of presidential action. Both the theory and practice of presidential rule making and adjudication are examined in detail. The book, the first of its kind, reveals how far from actuality are the generally held beliefs regarding the power of the courts versus the power of the Presidency. The significance of such a study is readily apparent in view of the fact that the fate not only of the United States but of Western civilization will hang in the balance of the President's exercise of his official powers during the next decade.