Thanks to Joseph:
The Firearms Freedom Act (FFA) is sweeping the Nation.
Originally introduced and passed in Montana, the FFA declares that any firearms made and retained in-state are beyond the authority of Congress under its constitutional power to regulate commerce among the states.
Following initial Montana enactment, clones of the Firearms Freedom Act have subsequently been enacted in Tennessee, Utah, Wyoming and South Dakota, and other clones have been introduced in the legislatures of twenty-some other states.
The FFA is primarily a Tenth Amendment challenge to the powers of Congress under the “commerce clause,” with firearms as the object – it is a state’s rights exercise.