Thus the constitution provides: No law shall be made by Congress prohibiting the free exercise of religion, or abridging the freedom of speech or of the press. The right of the people to keep and bear arms shall not be infringed. The right of the people to be secure in their persons, houses, papers and effects, against unreasonable searches and seizures, shall not be violated. No person shall be subject for the same offense to be twice put in jeopardy of life or limb; nor be compelled, in any criminal case, to be a witness against himself; nor be deprived of life, liberty, or property without due process of law; nor shall private property be taken for public use without just compensation. In all criminal prosecutions, the accused shall enjoy the right to a speedy and public trial, by an impartial jury of the state and district wherein the crime shall have been committed; and to be informed of the nature and cause of the accusation, to be confronted with the witnesses against him, to have compulsory process for obtaining witnesses in his favor, and to have the assistance of counsel for his defense. Excessive bail shall not he required, nor excessive fines imposed, nor cruel and unusual punishment inflicted. The privilege of the writ of habeas corpus shall not be suspended, except in case of rebellion or invasion. No bill of attainder or ex post facto law shall be passed. And by the Fourteenth Amendment, no state shall deprive any person of life, liberty, or property, without due process of law; nor deny to any person within its jurisdiction the equal protection of the law.
We have lived so long under the protection of these rules that most of us have forgotten their importance. They have been unquestioned in America so long that most of us have forgotten the reasons for them. But if we lose them we shall learn the reasons by hard experience. And we are in some danger of losing them, not all at once but gradually, by indifference.
As Professor Sohm says: "The greatest and most far reaching revolutions in history are not consciously observed at the time of their occurrence."
Every one of these provisions has a history. Every one stops a way through which the overwhelming power of government has oppressed the weak individual citizen, and may do so again if the way be opened. Such provisions as these are not mere commands. They withhold power. The instant any officer, of whatever kind or grade, transgresses them he ceases to act as an officer. The power of sovereignty no longer supports him. The majesty of the law no longer gives him authority. The shield of the law no longer protects him. He becomes a trespasser, a despoiler, a law breaker, and all the machinery of the law may be set in motion for his restraint or punishment. It is true that the people who have made these rules may repeal them. As restraints upon the people themselves they are but self-denying ordinances which the people may revoke, but the supreme test of capacity for popular self-government is the possession of that power of self-restraint through which a people can subject its own conduct to the control of declared principles of action.
These rules of constitutional limitation differ from ordinary statutes in this, that these rules are made impersonally, abstractly, dispassionately, impartially, as the people's expression of what they believe to be right and necessary for the preservation of their idea of liberty and justice. The process of amendment is so guarded by the constitution itself as to require the lapse of time and opportunity for deliberation and consideration and the passing away of disturbing influences which may be caused by special exigencies or excitements, before any change can be made. On the contrary, ordinary acts of legislation are subject to the considerations of expediency for the attainment of the particular objects of the moment, to selfish interests, momentary impulses, passions, prejudices, temptations. If there be no general rules which control particular action, general principles are obscured or set aside by the desires and impulses of the occasion. Our knowledge of the weakness of human nature and countless illustrations from the history of legislation in our own country point equally to the conclusion that if governmental authority is to be controlled by rules of action, it cannot be relied upon to impose those rules upon itself at the time of action, but must have them prescribed beforehand.
The second class of limitations upon official power provided in our constitution prescribe and maintain the distribution of power to the different departments of government and the limitations upon the officers invested with authority in each department. This distribution follows the natural and logical lines of the distinction between the different kinds of power—legislative, executive, and judicial. But the precise allotment of power and lines of distinction are not so important as it is that there shall be distribution, and that each officer shall be limited in accordance with that distribution, for without such limitations there can be no security for liberty. If, whatever great officer of state happens to be the most forceful, skillful, and ambitious, is permitted to overrun and absorb to himself the powers of all other officers and to control their action, there ensues that concentration of power which destroys the working of free institutions, enables the holder to continue himself in power, and leaves no opportunity to the people for a change except through a revolution. Numerous instances of this very process are furnished by the history of some of the Spanish-American republics. It is of little consequence that the officer who usurps the power of others may design only to advance the public interest and to govern well. The system which permits an honest and well-meaning man to do this will afford equal opportunity for selfish ambition to usurp power in its own interest. Unlimited official power concentrated in one person is despotism, and it is only by carefully observed and jealously maintained limitations upon the power of every public officer that the workings of free institutions can be continued.
The rigid limitation of official power is necessary not only to prevent the deprivation of substantial rights by acts of oppression, but to maintain that equality of political condition which is so important for the independence of individual character among the people of the country. When an officer has authority over us only to enforce certain specific laws at particular times and places, and has no authority regarding anything else, we pay deference to the law which he represents, but the personal relation is one of equality. Give to that officer, however, unlimited power, or power which we do not know to be limited, and the relation at once becomes that of an inferior to a superior. The inevitable result of such a relation long continued is to deprive the people of the country of the individual habit of independence. This may be observed in many of the countries of Continental Europe, where official persons are treated with the kind of deference, and exercise the kind of authority, which are appropriate only to the relations between superior and inferior.
So the Massachusetts Constitution of 1780, after limiting the powers of each department to its own field, declares that this is done "to the end it may be a government of laws and not of men."
The third class of limitations I have mentioned are those made necessary by the novel system which I have described as superimposing upon a federation of state governments, a national government acting directly upon the individual citizens of the states. This expedient was wholly unknown before the adoption of our constitution. All the confederations which had been attempted before that time were simply leagues of states, and whatever central authority there was derived its authority from and had its relations with the states as separate bodies politic. This was so of the old confederation. Each citizen owed his allegiance to his own state and each state had its obligations to the confederation. Under our constitutional system in every part of the territory of every state there are two sovereigns, and every citizen owes allegiance to both sovereigns—to his state and to his nation. In regard to some matters, which may generally be described as local, the state is supreme. In regard to other matters, which may generally be described as national, the nation is supreme. It is plain that to maintain the line between these two sovereignties operating in the same territory and upon the same citizens is a matter of no little difficulty and delicacy. Nothing has involved more constant discussion in our political history than questions of conflict between these two powers, and we fought the great Civil War to determine the question whether in case of conflict the allegiance to the state or the allegiance to the nation was of superior obligation. We should observe that the Civil War arose because the constitution did not draw a clear line between the national and state powers regarding slavery. It is of very great importance that both of these authorities, state and national, shall be preserved together and that the limitations which keep each within its proper province shall be maintained. If the power of the states were to override the power of the nation we should ultimately cease to have a nation and become only a body of really separate, although confederated, state sovereignties continually forced apart by diverse interests and ultimately quarreling with each other and separating altogether. On the other hand, if the power of the nation were to override that of the states and usurp their functions we should have this vast country, with its great population, inhabiting widely separated regions, differing in climate, in production, in industrial and social interests and ideas, governed in all its local affairs by one all-powerful, central government at Washington, imposing upon the home life and behavior of each community the opinions and ideas of propriety of distant majorities. Not only would this be intolerable and alien to the idea of free self-government, but it would be beyond the power of a central government to do directly. Decentralization would be made necessary by the mass of government business to be transacted, and so our separate localities would come to be governed by delegated authority—by proconsuls authorized from Washington to execute the will of the great majority of the whole people. No one can doubt that this also would lead by its different route to the separation of our Union. Preservation of our dual system of government, carefully restrained in each of its parts by the limitations of the constitution, has made possible our growth in local self-government and national power in the past, and, so far as we can see, it is essential to the continuance of that government in the future.
All of these three classes of constitutional limitations are therefore necessary to the perpetuity of our government. I do not wish to be understood as saying that every single limitation is essential. There are some limitations that might be changed and something different substituted. But the system of limitation must be continued if our governmental system is to continue—if we are not to lose the fundamental principles of government upon which our Union is maintained and upon which our race has won the liberty secured by law for which it has stood foremost in the world.