If you wait until confiscation, it will be too late. I would say this is the time to be vigilant about writing senators, congressmen, and anyone who will listen. Be politically proactive during this time! If we see the tides turning (i.e. federal anti gun laws) we then go through legal channels and file lawsuits and the like. If nothing else works, then it is the time.
Soap Box, Ballot Box, Jury Box, Cartridge box.... in that order.