Whether a law be void for its repugnancy to the Constitution, is, at all times, a question of much delicacy, which out seldom, if ever, to be decided in the affirmative, in doubtful case. ... But it is not on slight implication and vague conjecture that the legislature is to be pronounced to have transcended its powers, and its acts to be considered as void. The opposition between the Constitution and the law should be such that the judge feels a clear and strong conviction of their incompatibility with each other.
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Fletcher v. Peck, 10 U.S. (6 Cranch) 87, 128 (1810)John Marshall
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[T]he constitution controls any legislative act repugnant to it. . . . It is emphatically the province and duty of the judicial department to say what the law is. . . . So if a law be in opposition to the constitution; if both the law and the constitution apply to a particular case, so that the court must either decide that case conformably to the law, disregarding the constitution; or conformably to the constitution disregarding the law; the court must determine which of these conflicting rules governs the case. This is the very essence of judicial duty. . . . Those then who controvert the principle that the constitution is to be considered, in court, as a paramount law, are reduced to the necessity of maintaining that courts must close their eyes on the constitution, and see only the law. This doctrine would subvert the very foundation of all written constitutions . . . It would be giving the legislature a practical and real omnipotence . . . The judicial power of the United States is extended to all cases arising under the constitution.
John Marshall
We admit, as all must admit, that the powers of the Government are limited, and that its limits are not to be transcended. But we think the sound construction of the Constitution must allow to the national legislature that discretion with respect to the means by which the powers it confers are to be carried into execution which will enable that body to perform the high duties assigned to it in the manner most beneficial to the people. Let the end be legitimate, let it be within the scope of the constitution, and all means which are appropriate, which are plainly adapted to that end, which are not prohibited, but consist with the letter and spirit of the constitution, are constitutional.
John Marshall
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. [...] 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.
Alexander Hamilton
ALL PRECEDENTS ARE UNDER THE CONTROUL OF THE PRINCIPLES OF THE LAW... No Acts of Parliament can establish such a writ [writ of assistance enabling British search of homes for no reason]: … it would be void, "AN ACT AGAINST THE CONSTITUTION IS VOID." Vid. Viner. But … special writs may be granted on oath and probable suspicion.
James Otis
Certainly all those who have framed written constitutions contemplate them as forming the fundamental and paramount law of the nation, and consequently the theory of every such government must be, that an act of the legislature, repugnant to the constitution, is void.
John Marshall
Marshall, John
Marshall, Joshua Micah
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