Very good. There are prohibitions to the states. But as I demonstrated, secession and interposition are not prohibited. Somehow you think they are, which is what you need to explain.You are something else. You cannot explain why what you gave me proves your point. It doesn't.
Article I Section 8 has nothing to do with secession or interposition.
Section 10 says no state may enter into a confederation, not that a state cannot secede or nullify law. (after a state secedes, it will no longer be part of the union, so it will no longer have to follow the Constitution. A state may not remain part of the union and make alliances with another union as well).
Treason has nothing to do with nullification or secession, because treason is defined is giving aid to enemies or declaring war on the United States.
The supremacy clause states the Constitution trumps state law contrary to it, which is correct. But the Constitution does not prohibit nullification or secession, so states supporting such policies are not violating the supremacy clause.
You are simply incorrect.
Explain what?
Look at what I posted.
There are prohibitions to the states.
This was all settled during the civil war as well.
They sure as heck are..
States are prohibited from coining money, forming unions with other states, or insurrection, which, other then trying to get a bill through congress that allows for secession, would be the only way to secede.
And the Constitution is supreme. States cannot willy nilly decide they are not going to obey federal laws..or the President.
It's pretty clear.