Elihu Root

“There is only one alternative to having the courts decide upon the validity of legislative acts, and that is by requiring the courts to treat the opinion of the legislature upon the validity of its statutes, evidenced by their passage, as conclusive. But the effect of this would be that the legislature would not be limited at all except by its own will. All the provisions designed to maintain a government carried on by officers of limited powers, all the distinctions between what is permitted to the national government and what is permitted to the state governments, all the safeguards of the life, liberty and property of the citizen against arbitrary power, would cease to bind Congress, and on the same theory they would cease also to bind the legislatures of the states. Instead of the constitution being superior to the laws the laws would be superior to the constitution, and the essential principles of our government would disappear. More than one hundred years ago, Chief Justice Marshall, in the great case of Marbury vs. Madison, set forth the view upon which our government has ever since proceeded. He said: "The powers of the legislature are defined and limited; and that those limits may not be mistaken or forgotten, the constitution is written.
To what purpose are powers limited, and to what purpose is that limit committed to writing, if these limits may, at any time, be passed by those intended to be restrained? The”
― Elihu Root, Experiments in Government and the Essentials of the Constitution