be supreme

References in classic literature ?
But what inference can be drawn from this, or what would they amount to, if they were not to be supreme? It is evident they would amount to nothing.
Though a law, therefore, laying a tax for the use of the United States would be supreme in its nature, and could not legally be opposed or controlled, yet a law for abrogating or preventing the collection of a tax laid by the authority of the State, (unless upon imports and exports), would not be the supreme law of the land, but a usurpation of power not granted by the Constitution.