This situation is known as the Nullification Crisis, and led to the Federal government passing a Bill that authorised the use of military force against the State of South Carolina.
Of such import was this principle that the Federal government was prepared to go to war with a State of the Union, to enforce its Constitutional right of supremacy.
Now it appears that some lawmakers in Wyoming are prepared to subject the citizens of their state to a similar risk.
AN ACT relating to firearms; providing that any federal law which attempts to ban a semi-automatic firearm or to limit the size of a magazine of a firearm or other limitation on firearms in this state shall be unenforceable in Wyoming; providing a penalty; and providing for an effective date.During the last four years we have seen a marked "uptick" in State laws being amended or rejected by Federal Courts. Many have been an easy call, wingers seeking to enforce their will on women, right up to the Affordable Care Act challenged by States all the way to the SCOTUS
Be It Enacted by the Legislature of the State of Wyoming:
(a) No public servant as defined in W.S. 6-5-101, or dealer selling any firearm in this state shall enforce or attempt to enforce any act, law, statute, rule or regulation of the United States government relating to a personal firearm, firearm accessory or ammunition that is owned or manufactured commercially or privately in Wyoming and that remains exclusively within the borders of Wyoming.
(b) Any official, agent or employee of the United States government who enforces or attempts to enforce any act, order, law, statute, rule or regulation of the United States government upon a personal firearm, a firearm accessory or ammunition that is owned or manufactured commercially or privately in Wyoming and that remains exclusively within the borders of Wyoming shall be guilty of a felony and, upon conviction, shall be subject to imprisonment for not more less than one (1) year and one (1) day or more than five (5) years, a fine of not more than two thousand dollars ($2,000.00) five thousand dollars ($5,000.00), or both.
This, while not normally so frequent, is normal law-making. States and the Federal government make laws which may, or may not be challenged. Indeed the constitutionality of a law cannot really be determined in advance, although clearly some laws stand less chance of making it than others.
What is happening in Wyoming is not that.
What the Bill here does is assert the primacy of State Law over Federal Law. If upheld, which is not actually possible, it would rip up the Constitution.
While this proposed law may indeed be simply "grandstanding", the direct challenge to the constitution is a marked departure for the Right, bent as they are on protecting the constitution against all-comers.
Apparently they do not do irony in Wyoming, but I do wonder what implications there should be for legislators who attack the constitution so directly, rather than simply pass stoopid laws that will be struck down.