Ahh, I love the McNuke argument. It's like "what about the roads" but for firearms policy. I've actually thought pretty hard about it, but no, I don't think so, and I believe my reason is consistent with the ideology I expressed above. The issue with nukes is that it's simply not possible to detonate one without causing collateral damage. Fallout, radiation poisoning, etc. So the government can in fact act to keep these externalities from harming others.