Nullification is not constitutional.
How do you figure? Only the federal government has the right to interpret the document made between it and the states?
“Nullification is not constitutional.”
According to Madison and Jefferson they had that right
“The constitution of the United States was formed by the sanction of the states, given by each in its sovereign capacity. It adds to the stability and dignity, as well as to the authority, of the constitution, that it rests upon this legitimate and solid foundation. The states, then, being the parties to the constitutional compact, and in their sovereign capacity, it follows of necessity that there can be no tribunal above their authority to decide, in the last resort, whether the compact made by them be violated and consequently that, as the parties to it, they must themselves decide, in the last resort, such questions as may be of sufficient magnitude to require their interposition.”