How exactly to you propose that Comm2A go about this? Find me someone who is willing to risk not getting license anytime soon and it's game on. As has been discussed many times before, the fundamental obstacle to these types of non-statutory requirements is [good] individual plaintiffs willing to challenge them.
The bottom line is that every gun owner and would-be gun owner, including everyone on NES, will suck it up and do whatever their CLEO requires rather than take a stand if it means that they'll get a denial in the short term. Every plaintiff we've had to date was there because they did not have an option to just comply. They had no other option than to sue. The US Constitution limits federal judicial proceeding to those that deal with "actual cases or controversy". Without a real person that is harmed by Woburn's policy, the harm is only hypothetical.