So it is your belief that the Feds can make any law that violates the Constitution that will always trumps state laws when the Feds have no Constitutional authority to do so. What does the 9th or 10th Amendment say? And I’ve read Article 6.
Damn you're dumb. That is not my belief and I'd like you to point to where I've ever said it was. If a state believes a law violates the Constitution then challenge it and take it to the Supreme Court. If they're right then the Court will overturn the law and the problem is solved. If the Court rules the law is Constitutional then the states have no choice but comply per the Supremacy Clause in Article VI which you claim to have read. The 9th and 10th Amendments don't enter in to it.