Such, Sir, are the inevitable results of this doctrine.  Beginning with the original error, that the Constitution of the United States is nothing but a compact between sovereign States; asserting, in the next step, that each State has a right to be its own sole judge of the extent of its own obligations, and consequently of the constitutionality of laws of Congress; and, in the next, that it may oppose whatever it sees fit to declare unconstitutional, and that it decides for itself on the mode and measure of redress,—­the argument arrives at once at the conclusion, that what a State dissents from, it may nullify; what it opposes, it may oppose by force; what it decides for itself, it may execute by its own power; and that, in short, it is itself supreme over the legislation of Congress, and supreme over the decisions of the national judicature; supreme over the constitution of the country, supreme over the supreme law of the land.  However it seeks to protect itself against these plain inferences, by saying that an unconstitutional law is no law, and that it only opposes such laws as are unconstitutional, yet this does not in the slightest degree vary the result; since it insists on deciding this question for itself; and, in opposition to reason and argument, in opposition to practice and experience, in opposition to the judgment of others, having an equal right to judge, it says, only, “Such is my opinion, and my opinion shall be my law, and I will support it by my own strong hand.  I denounce the law; I declare it unconstitutional; that is enough; it shall not be executed.  Men in arms are ready to resist its execution.  An attempt to enforce it shall cover the land with blood.  Elsewhere it may be binding; but here it is trampled underfoot.”

This, Sir, is practical nullification.

And now, Sir, against all these theories and opinions, I maintain,—­

1.  That the Constitution of the United States is not a league, confederacy, or compact between the people of the several States in their sovereign capacities; but a government proper, founded on the adoption of the people, and creating direct relations between itself and individuals.

2.  That no State authority has power to dissolve these relations; that nothing can dissolve them but revolution; and that, consequently, there can be no such thing as secession without revolution.

3.  That there is a supreme law, consisting of the Constitution of the United States, and acts of Congress passed in pursuance of it, and treaties; and that, in cases not capable of assuming the character of a suit in law or equity, Congress must judge of, and finally interpret, this supreme law so often as it has occasion to pass acts of legislation; and in cases capable of assuming, and actually assuming, the character of a suit, the Supreme Court of the United States is the final interpreter.

4.  That an attempt by a State to abrogate, annul, or nullify an act of Congress, or to arrest its operation within her limits, on the ground that, in her opinion, such law is unconstitutional, is a direct usurpation on the just powers of the general government, and on the equal rights of other States; a plain violation of the Constitution, and a proceeding essentially revolutionary in its character and tendency.