The anti-gun side uses the word “loophole”, as in “gun show loophole” to great advantage. I think we should adopt their tactic.
We don’t have a regulatory agency for speech, religion, assembly, or association so why do we have one for arms? The “F” in “ATF” exists only because of a loophole in U.S. law. We need to plug the loophole by unplugging the ATF from Federal funding.
If the states want their own regulatory agency then let them fund them and we will battle their existence and scope as needed in the courts.