US Politics and Gun Control

I have always been interested in US Politics. I find Canadian Politics a bit boring. It is always the same stuff over and over again, so I tend to follow US politics very closely. 

The big debate down south right now is gun control. 

So of the most emotional arguments for gun control are also the poorest. But because they appeal to the emotions they are the hardest to refute.

All right have limits and one of the hardest arguments for Second Amendment advocates is what should be the limit on the Second Amendment. Don't say no limits. Freedom of speech is limited by libel and yelling "Fire" in a crowded theater (when there is no fire). Does the Second Amendment allow US citizens to own nuclear weapons? Or only Revolutionary War muskets?

Anyone can answer that question, but is that answer based on a principle and what is that principle. 

Here is an excellent post that answers the question of limits on the Second Amendment in a logically consistent way.