"But it is understood that the nullifying doctrine imports that the decision of the State is to be presumed valid, and that it overrules the law of the United States, unless overruled by three fourths of the States.Can more be necessary to demonstrate the inadmissibility of such a doctrine, than that it puts it in the power of the smallest fraction over one fourth of the United States, that is, of seven states out of twenty four, to give the law, and even the Constitution to seventeen States; each of the seventeen having as parties to the Constitution, an equal right with each of the seven, to expound it, and to insist on the exposition. That the seven might, in particular instances be right, and the seventeen wrong, is more than possible. But to establish a positive and permanent rule giving such a power, to such a minority, over such a majority, would overturn the first principle of free government, and in practice necessarily overturn the government itself.It is to be recollected that the Constitution was proposed to the people of the States as a whole, and unanimously adopted by the States as a whole, it being a part of the Constitution that not less than three fourths of the States should be competent to make any alteration in what had been unanimously agreed to."
January 1, 1970
https://en.wikiquote.org/wiki/Nullification_crisis