> whether the founding documents were ever useful, what
> governing principles do we want to live with now?
My understanding is that if you can get 2/3 of Congress to agree with whatever governing principles you want to live with now, you can amend the constitution. It's far from clear to me (a bleeding heart liberal) that 2/3 of the people, let alone 2/3 of Congress, want to see the 2nd Amendment rights re-amended.