As I've said, Wlat, law is not just made up as we go along. And regarding the Militia Act, it states insurrection, not withdrawal. What's your next desperate grasp at the quickly-receding straws going to entail, an appeal to the U.N. Charter?
No state has ever withdrawn from the Union.
The Act leaves it up to the president to decide when insurrection is active.
That's the law.
Walt