This august power has won the admiration of the world, and by many is regarded as a novel contribution to the science of government. The idea, however, was not wholly novel. As previously shown, four Chief Justices of England had declared that an Act of Parliament, if against common right and reason, could be treated as null and void; while in France the power of the judiciary to refuse efficacy to a law, unless sanctioned by the judiciary, had been the cause of a long struggle for at least three centuries between the French monarch and the courts of France. However, in England the doctrine of the common law yielded to the later doctrine of the omnipotence of Parliament, while in France the revisory power of the judiciary was terminated by the French Revolution.
The United States, however, embodied it in its form of government and thus made the judiciary, and especially the Supreme Court, the balance wheel of the Constitution. Without such power the Constitution could never have lasted, for neither executive officers nor legislatures are good judges of the extent of their own powers.
Nothing more strikingly shows the spirit of unity which the Constitution brought into being than the unbroken success with which the Supreme Court has discharged this difficult and most delicate duty. The President is the Commander-in-Chief of the Army and the Navy and can call them to his aid. The legislature has almost unlimited power through its control of the public purse. The States have their power reinforced by armed forces, and some of them are as great in population and resources as many of the nations of Europe. The Supreme Court, however, has only one officer to execute its decrees, called the United States Marshal; and yet, without sword or purse, and with only a high sheriff to enforce its mandates, when the Supreme Court says to a President or to a Congress or to the authorities of a great—and, in some respects, sovereign—State that they must do this or must refrain from doing that, the mandate is at once obeyed. Here, indeed, is the American ideal of "a government of laws and not of men" most strikingly realized; and if the American Constitution, as formulated and developed, had done nothing else than to establish in this manner the supremacy of law, even as against the overwhelming sentiment of the people, it would have justified the well-known encomium of Mr. Gladstone.
It must be added, however, that in one respect this function of the judiciary has had an unfortunate effect in lessening rather than developing in the people the sense of constitutional morality. In your country the power of Parliament is omnipotent, and yet in its legislation it voluntarily observes these great fundamental decencies of liberty which in the American Constitution are protected by formal guarantees. This can only be true because either your representatives in Parliament have a deep sense of constitutional morality, or that the constituencies which select them have so much sense of constitutional justice that their representatives dare not disregard these fundamental decencies of liberty.
In the United States, however, the confidence that the Supreme Court will itself protect these guaranties of liberty has led to a diminution of the sense of constitutional morality, both in the people and their representatives. It abates the vigilance which is said to be ever the price of liberty.
Laws are passed which transgress the limitations of the Constitution without adequate discussion as to their unconstitutional character, for the reason that the determination of this fact is erroneously supposed to be the exclusive function of the judiciary.
The judiciary, contrary to the common supposition, has no plenary power to nullify unconstitutional laws. It can only do so when there is an irreconcilable and indubitable repugnancy between a law and the Constitution; but obviously laws can be passed from motives that are anti-constitutional, and there is a wide sphere of political discretion in which many acts can be done which, while politically anti-constitutional, are not juridically unconstitutional. For this reason, the undue dependence upon the judiciary to nullify every law which either in form, necessary operation, or motive transgresses the Constitution has so far lessened the vigilance of the people to protect their own Constitution as to lead to its serious impairment.
5.
The fifth fundamental principle was a system of governmental checks and balances.
The founders of the Republic were not enamoured of power. As they viewed human history, the worst evils of government were due to excessive concentration of power, which like Othello's jealousy "makes the meat it feeds on."