There are approx 310 million firearms in circulation among civilians in the USA. Good luck registering them. The third-most powerful lobbying group (after AARP and AIPAC) is a 2nd Amendment absolutist which has been hysterically screaming about how Obama will derk er guhns for four years. The courts have repeatedly demonstrated that they are uninterested in regulating gun rights in any way, and there is, so far, insufficient public outrage to change that equation.
I would like to see gun ownership about as regulated as motor vehicle operation, but a school full of dead children ain't gonna make it happen. The Founders kinda screwed us with the phrasing of the Second Amendment. Yes, the "well-regulated militia" part is pretty obvious, but so is "shall not be infringed."
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