Well, if it wasn't for the Supreme Court-created Incorporation Doctrine under the 14th amendment, the States could do away with all of them.
But the point is, a strict interpretation of the Constitution gets you to that point, and that was the situation when the country was founded.
The incorporation of the 14th amendment to the states was created by the Supreme Court, it's not actually stated in the 14th amendment.
but what about this?
Article VI
All debts contracted and engagements entered into, before the adoption of this Constitution, shall be as valid against the United States under this Constitution, as under the Confederation.
This Constitution, and the laws of the United States which shall be made in pursuance thereof; and all treaties made, or which shall be made, under the authority of the United States, shall be the supreme law of the land; and the judges in every state shall be bound thereby, anything in the Constitution or laws of any State to the contrary notwithstanding.
The Senators and Representatives before mentioned, and the members of the several state legislatures, and all executive and judicial officers, both of the United States and of the several states, shall be bound by oath or affirmation, to support this Constitution; but no religious test shall ever be required as a qualification to any office or public trust under the United States.
you are leaving OUT article 6 in your presumption, no?
care