preconceptions, have found their way into Constitutional Law, have indeed become for better, for worse, its leavening element.

That is to say, the effectiveness of Constitutional Law as a system of restraints on governmental action in the United States, which is its primary raison d'etre, depends for the most part on the effectiveness of these doctrines as they are applied by the Court to that purpose. The doctrines to which I refer are (1) the doctrine or concept of Federalism; (2) the doctrine of the Separation of Powers; (3) the concept of a Government of Laws and not of Men, as opposed especially to indefinite conceptions of presidential power; (4) and the substantive doctrine of Due Process of Law and attendant conceptions of Liberty. What I proposed to do is to take up each of these doctrines or concepts in turn, tell something of their earlier history, and then project against this background a summary account of what has happened to them in recent years in consequence of the impact of war, of economic crisis, and of the political and ideological reaction to the latter during the Administrations of Franklin D. Roosevelt.

I

Federalism

Federalism in the United States embraces the following elements: (1) as in all federations, the union of several autonomous political entities, or "States," for common purposes; (2) the division of legislative powers between a "National Government," on the one hand, and constituent "States," on the other, which division is governed by the rule that the former is "a government of enumerated powers" while the latter are governments of "residual powers"; (3) the direct operation, for the most part, of each of these centers of government, within its assigned sphere, upon all persons and property within its territorial limits; (4) the provision of each center with the complete apparatus of law enforcement, both executive and judicial; (5) the supremacy of the "National Government" within its assigned sphere over any conflicting assertion of "state" power; (6) dual citizenship.

The third and fourth of the above-listed salient features of the American Federal System are the ones which at the outset marked it off most sharply from all preceding systems, in which the member states generally agreed to obey the mandates of a common government for certain stipulated purposes, but retained to themselves the right of ordaining and enforcing the laws of the union. This, indeed, was the system provided in the Articles of Confederation. The Convention of 1787 was well aware, of course, that if the inanities and futilities of the Confederation were to be avoided in the new system, the latter must incorporate "a coercive principle"; and as Ellsworth of Connecticut expressed it, the only question was whether it should be "a coercion of law, or a coercion of arms," that "coercion which acts only upon delinquent individuals" or that which is applicable to "sovereign bodies, states, in their political capacity."[10] In Judicial Review the former principle was established, albeit without entirely discarding the latter, as the War between the States was to demonstrate.

The sheer fact of Federalism enters the purview of Constitutional Law, that is, becomes a judicial concept, in consequence of the conflicts which have at times arisen between the idea of State Autonomy ("State Sovereignty") and the principle of National Supremacy. Exaltation of the latter principle, as it is recognized in the Supremacy Clause (Article VI, paragraph 2) of the Constitution, was the very keystone of Chief Justice Marshall's constitutional jurisprudence. It was Marshall's position that the supremacy clause was intended to be applied literally, so that if an unforced reading of the terms in which legislative power was granted to Congress confirmed its right to enact a particular statute, the circumstance that the statute projected national power into a hitherto accustomed field of state power with unavoidable curtailment of the latter was a matter of indifference. State power, as Madison in his early nationalistic days phrased it, was "no criterion of national power," and hence no independent limitation thereof.

Quite different was the outlook of the Court over which Marshall's successor, Taney, presided. That Court took as its point of departure the Tenth Amendment, which reads, "The powers not delegated to the United States by this Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people." In construing this provision the Court under Taney sometimes talked as if it regarded all the reserved powers of the States as limiting national power; at other times it talked as if it regarded certain subjects as reserved exclusively to the States, slavery being, of course, the outstanding instance.[11]

But whether following the one line of reasoning or the other, the Taney Court subtly transformed its function, and so that of Judicial Review, in relation to the Federal System. Marshall viewed the Court as primarily an organ of the National Government and of its supremacy. The Court under Taney regarded itself as standing outside of and above both the National Government and the States, and as vested with a quasi-arbitral function between two centers of diverse, but essentially equal, because "sovereign", powers. Thus in Ableman v. Booth, which was decided on the eve of the War between the States, we find Taney himself using this arresting language:

It is, therefore, the Taney Court, rather than the Marshall Court, which elaborated the concept of Dual Federalism. Marshall's federalism is more aptly termed national federalism; and turning to modern issues, we may say without exaggeration that the broad general constitutional issue between the Court and the Franklin D. Roosevelt program in such cases as Schechter Corp. v. United States and Carter v. Carter Coal Co.[13] was, whether Marshall's or Taney's brand of federalism should prevail. More precisely, the issue in these cases was whether Congress' power to regulate commerce must stop short of regulating the employer-employee relationship in industrial production, that having been hitherto regulated by the States. In Justice Sutherland's words in the Carter case: