The best statement of this doctrine, however, is to be found in the works of John C. Calhoun, whose Disquisition on Government and Discourse on the Constitution of the United States are a masterly defense of the system of checks and balances. He had no sympathy with what would now be called popular government. His point of view was essentially aristocratic, and he frankly avowed it.

He recognized the fact that under the existing social organization the interests of all classes are not the same; that there is a continual struggle between them; and that any interest or combination of interests obtaining control of the government will seek their own welfare at the expense of the rest. This, he claimed, made it necessary to so organize the government as to give the minority the means of self-protection. To give to the minority this constitutional power would tend to prevent the selfish struggle to obtain possession of the government, since it would deprive the majority of all power to aggrandize themselves at the expense of the minority. The very essence of constitutional government, according to his view, was the protection afforded to the minority through the limitation of the power of the majority. To accomplish the true end of constitutional government, which is the limitation of the power of the numerical majority, it is necessary, he contended, that the various classes or interests should be separately represented, and that each through its proper organ should have a veto on the acts of the others. In a government so organized no measure could be enacted into law and no policy enforced, unless it had received the assent of each element recognized in the Constitution. This method of taking the sense of the community, which required the concurrence of its several parts, he termed that of the concurrent majority.

This principle of class representation, he maintained, was fundamental in the American Constitution, which recognized for certain purposes the numerical majority as one of its elements, but only for certain purposes. For he tells us, and correctly, that "the numerical majority is, strictly speaking, excluded, even as one of its elements."[139] In support of this statement he undertakes to show that the numerical majority could not even prevent the amendment of the Constitution, since through a combination of the smaller states an amendment desired by the minority could be forced through in opposition to the wishes of the majority. He might have added that it was the intention of those who framed our government to allow the minority a free hand in amending by the method of constitutional interpretation; and also that they intended to deny to the numerical majority a veto on treaties and appointments. This refusal to recognize the numerical majority even as one of the coördinate elements in the government was as hereinbefore shown inconsistent with the doctrine of checks, and is to be explained on the theory that they wished to subordinate the democratic element in the Constitution.

Calhoun argued that the growth of political parties had broken down our system of constitutional checks. The Constitution as originally adopted made no mention of, and allowed no place for these voluntary political organizations. In fact, the purpose of the political party was diametrically opposed to and subversive of all that was fundamental in the Constitution itself, since it aimed at nothing less than the complete destruction of the system of checks by bringing every branch of the government under its control. To the extent that it had achieved its purpose, it had consolidated the powers of the general government and brought them, he contended, under the direct control of the numerical majority, which was the very thing that the framers of the Constitution wished to guard against.

The complete control which the numerical majority had thus obtained over the Federal government made it supremely important that all constitutional power vested in the several states to resist Federal aggression should be actively employed. That the states had the power under the Constitution to check the general government when it attempted to overstep the limits set to its authority was necessarily implied in the fact that our system of government was federal and not national. His argument proceeded on the theory encouraged by the framers of the Constitution that the general government and the state governments were coördinate. "The idea of coördinates," he tells us, "excludes that of superior and subordinate, and necessarily implies that of equality. But to give either the right, not only to judge of the extent of its own powers, but, also, of that of its coördinate, and to enforce its decision against it, would be, not only to destroy the equality between them, but to deprive one of an attribute—appertaining to all governments—to judge, in the first instance, of the extent of its powers. The effect would be to raise one from an equal to a superior, and to reduce the other from an equal to a subordinate."[140]

From this it would follow that neither should have the exclusive right to judge of its own powers—that each should have a negative on the acts of the others. That this was the intention of the framers of the Constitution he argues from the fact that all efforts in the Convention to give the general government a negative on the acts of the states were unsuccessful. The efforts to confer this power, he contends, were made because it was seen that in the absence of such a provision the states would have a negative on the acts of the general government. The failure of these efforts in the Convention was due, he claims, to the fact that the members of that body wished to make the general government and the state governments coördinate, instead of subordinating the latter to the former as the advocates of a national government desired. The fact upon which Calhoun based this contention would seem to justify his conclusion; but if we consult the debates which took place in that body, it is easily seen that the refusal of the Convention to incorporate such a provision in the Constitution can not be ascribed to any hostility on the part of that body to national government. In fact, as hereinbefore shown, it was for purely practical reasons that they rejected all proposals which contemplated the recognition in the Constitution itself of the supremacy of the general government. While declining to allow a provision of this character to be incorporated in the Constitution, they by no means disapproved of a strong supreme central government, but merely adopted a less direct and therefore easier method of attaining their end.

While Calhoun maintained that in order to make the limitations on the authority of the general government effective it was necessary that a state should have a veto on Federal laws, he did not contend that the verdict of a state should be final. It would still be possible for the general government to override the veto of a state by procuring a constitutional amendment which would remove all doubt as to its right to exercise the power in question. This method of appeal, he argued, was always open to the general government, since it represented and was in the hands of the numerical majority. This would be true, however, only when the party in power had the requisite two-thirds majority in both houses of Congress, or at least controlled the legislatures in two-thirds of the states. Otherwise its control of the general government would not enable it to propose the desired constitutional amendment. With this qualification Calhoun's contention was correct. On the other hand the state could not defend itself against Federal aggression, since, belonging to the minority, it would have no means of compelling the submission of a constitutional amendment involving the point in dispute. The effect of a state veto on an act of Congress would be to compel the latter to choose between abandoning the law in question as unconstitutional and appealing to the constitution-making power in defense of its claim. If it chose the latter alternative and succeeded in having its authority supported by an appropriate constitutional amendment, there was nothing for the state to do but submit, provided that the amendment in question was one clearly within the scope of the amending power. If, as Calhoun assumed, it was the purpose of the Constitution to withhold from a mere majority in control of the general government the power to enact and enforce unconstitutional legislation, the veto of a state would seem to be the only means by which the constitutional rights of a minority of the states could be protected.

Calhoun did not question the right of the Supreme Court of the United States to declare an act of Congress null and void, or its right to pass judgment upon the Constitution or the laws of a state when they were attacked as in conflict with the Federal Constitution in a case before it. This right, he contended, belonged to all courts whether federal or state. A decision of the Supreme Court of the United States adverse to the constitution or law of a state was, however, he maintained, binding only on the general government itself and the parties to the suit. As against the state it had no power to enforce its decision.

His entire argument rests upon the assumption that the Federal and state governments are co-equal and not superior and subordinate. This line of argument naturally led to the conclusion that the Federal and state courts were coördinate. It was perfectly natural for the advocate of state rights to take this view of the matter. Moreover there was nothing in the Constitution which expressly contradicted it. The framers of that instrument, as hereinbefore shown, did not wish to make an open attack on the generally accepted doctrine of state sovereignty before the Constitution was adopted. Their purpose was fully disclosed only after they had obtained control of the new government under the Constitution. To carry out their plan of subordinating the states, it was necessary to establish the supremacy of the Federal judiciary. This was accomplished by an act of Congress[141] which provided that "a final judgment or decree in any suit in the highest court ... of a state in which a decision in the suit could be had, where is drawn in question the validity of a treaty or statute of, or an authority exercised under, the United States, and the decision is against their validity; or where is drawn in question the validity of a statute of, or an authority exercised under, any state, on the ground of their being repugnant to the Constitution, treaties, or laws of the United States, and the decision is in favor of their validity; or where is drawn in question the construction ... of a treaty, or statute of, or commission held under, the United States, and the decision is against the title, right, privilege, or exemption specially set up or claimed by either party, under such clause of said Constitution, treaty, statute, or Commission, may be re-examined, and reversed or affirmed in the Supreme Court of the United States upon a writ of error."

This act, while expressly conferring upon the Supreme Court of the United States the power to veto a state law, at the same time denied to a state court the right to treat as unconstitutional a statute, treaty, or authority exercised under the general government. The question might properly be asked why this provision was not incorporated in the Constitution itself. Why did not the framers of that document clearly define the relation of the Federal to the state courts? To have included the substance of this act in the Constitution as submitted to the states, would have precluded the possibility of any future controversy concerning the relation of the Federal to the state courts. From the point of view of practical politics, however, there was one unanswerable argument against this plan. It would have clearly indicated the intention of the framers of the Constitution, but in doing so, it would for that very reason have aroused opposition which it would have been impossible to overcome. This is why the matter of defining the relation of the Federal to the state courts was deferred until after the Constitution had been ratified by the states. They chose the only practicable means of accomplishing their purpose. With all branches of the Federal government under their control, they were able to enact a law which virtually amended the Constitution. Calhoun argues that in passing this act Congress exceeded the powers granted to it by the Constitution. What he fails to recognize, however, is the fact that this measure, although at variance with the interpretation placed upon the Constitution by the people generally, was, nevertheless, in entire harmony with the general purpose of its framers and necessary to carry that purpose into effect.