???
Skirt the automatic weapon ban
Yes, Firearms Freedom Acts started in Montana (or Tennessee, depending on how you measure), but rather than tax evasion (or even avoidance) it's more like "Made in State for Sale In-State to Defeat Improper Federal Overstep Sanctioned in Wickard".
Should be interesting to see if the eight or ten states that have passed FFA's meant it or if it was just saber rattling posturing as The Won (Again) will no doubt be advocating NEW unConstitutional abridgements of our civil rights over the next four years.