No, state nullification of unconstitutional federal acts is not a “sanctuary city.”
It is what many states have just done to reject unconstitutional refusal to repel invasion (Art I, Sec 15, Cl 15) and is supported by the presumptions of the Constitution, the Supremacy Clause, and the Ninth and the Tenth Amendments.
I have no problem with an Article V convention as long as it’s done right. But I do have a problem with those that insist that constitutional state sovereignty cannot be exercised in the meantime. That is denying the very constitution you purport to uphold.
Saying state nullification is a “dead end” is like saying the fight for freedom is a dead end. Tell that to the rag-tag colonists against the most powerful nation in the world. The fight for freedom has no guarantees but is worth the battle. Get on board.
The way to assert state sovereignty is to return the states to the senate. There is no alternative.
Don't presume to lecture me on my devotion to the constitution and its basis.