The Federalist Papers by Alexander Hamilton, John Jay, and James Madison

State legislatures, and all executive and judicial officers, both of the United States and the several States, shall be bound by oath or affirmation to support this Constitution." It has been asked why it was thought necessary, that the State magistracy should be bound to support the federal Constitution, and unnecessary that a like oath should be imposed on the officers of the United States, in favor of the State constitutions. Several reasons might be assigned for the distinction. I content myself with one, which is obvious and conclusive. The members of the federal government will have no agency in carrying the State constitutions into effect. The members and officers of the State governments, on the contrary, will have an essential agency in giving effect to the federal Constitution. The election of the President and Senate will depend, in all cases, on the legislatures of the several States. And the election of the House of Representatives will equally depend on the same authority in the first instance; and will, probably, forever be conducted by the officers, and according to the laws, of the States.