There is no position which depends on clearer principles, than that every act of a delegated authority, contrary to the tenor of the commission under which it is exercised, is void. No legislative act, therefore, contrary to the Constitution, can be valid. To deny this, would be to affirm, that the deputy is greater than his principal; that the servant is above his master; that the representatives of the people are superior to the people themselves; that men acting by virtue of powers, may do not only what their powers do not authorize, but what they forbid.
If it be said that the legislative body are themselves the constitutional judges of their own powers, and that the construction they put upon them is conclusive upon the other departments, it may be answered, that this cannot be the natural presumption, where it is not to be collected from any particular provisions in the Constitution. It is not otherwise to be supposed, that the Constitution could intend to enable the representatives of the people to substitute their will to that of their constituents. It is far more rational to suppose, that the courts were designed to be an intermediate body between the people and the legislature, in order, among other things, to keep the latter within the limits assigned to their authority. The interpretation of the laws is the proper and peculiar province of the courts. A constitution is, in fact, and must be regarded by the judges, as a fundamental law. It therefore belongs to them to ascertain its meaning, as well as the meaning of any particular act proceeding from the legislative body. If there should happen to be an irreconcilable variance between the two, that which has the superior obligation and validity ought, of course, to be preferred; or, in other words, the Constitution ought to be preferred to the statute, the intention of the people to the intention of their agents.
Nor does this conclusion by any means suppose a superiority of the judicial to the legislative power. It only supposes that the power of the people is superior to both; and that where the will of the legislature, declared in its statutes, stands in opposition to that of the people, declared in the Constitution, the judges ought to be governed by the latter rather than the former. They ought to regulate their decisions by the fundamental laws, rather than by those which are not fundamental.
This exercise of judicial discretion, in determining between two contradictory laws, is exemplified in a familiar instance. It not uncommonly happens, that there are two statutes existing at one time, clashing in whole or in part with each other, and neither of them containing any repealing clause or expression. In such a case, it is the province of the courts to liquidate and fix their meaning and operation.
So far as they can, by any fair construction, be reconciled to each other, reason and law conspire to dictate that this should be done; where this is impracticable, it becomes a matter of necessity to give effect to one, in exclusion of the other. The rule which has obtained in the courts for determining their relative validity is, that the last in order of time shall be preferred to the first. But this is a mere rule of construction, not derived from any positive law, but from the nature and reason of the thing. It is a rule not enjoined upon the courts by legislative provision, but adopted by themselves, as consonant to truth and propriety, for the direction of their conduct as interpreters of the law. They thought it reasonable, that between the interfering acts of an EQUAL authority, that which was the last indication of its will should have the preference.
But in regard to the interfering acts of a superior and subordinate authority, of an original and derivative power, the nature and reason of the thing indicate the converse of that rule as proper to be followed.
They teach us that the prior act of a superior ought to be preferred to the subsequent act of an inferior and subordinate authority; and that accordingly, whenever a particular statute contravenes the Constitution, it will be the duty of the judicial tribunals to adhere to the latter and disregard the former.
It can be of no weight to say that the courts, on the pretense of a repugnancy, may substitute their own pleasure to the constitutional intentions of the legislature. This might as well happen in the case of two contradictory statutes; or it might as well happen in every adjudication upon any single statute. The courts must declare the sense of the law; and if they should be disposed to exercise WILL instead of JUDGMENT, the consequence would equally be the substitution of their pleasure to that of the legislative body. The observation, if it prove any thing, would prove that there ought to be no judges distinct from that body.
If, then, the courts of justice are to be considered as the bulwarks of a limited Constitution against legislative encroachments, this consideration will afford a strong argument for the permanent tenure of judicial offices, since nothing will contribute so much as this to that independent spirit in the judges which must be essential to the faithful performance of so arduous a duty.
