The states are moving on this pretty quickly. At least ten states are also enacting gun laws which are intended to trump federal law, (tenth amendment,) whereby guns and ammunition manufactured within the state are exempt from tenth amandment regulations. Montana has already passed such a law.
The states are rising up as the people rise up. Pressure is on.
Hopefully, more states will follow.
The health care bill is already dead. Virginny did it. If one state nullifies it then its done. But, if a few more do it then that would really send the Nazis to the woodshed.