From a practical standpoint, should anyone try, whether obama, the Senate, the freaking UN, etc., they will essentially be declaring war on We, the People, because that will be how such a "treaty" will be heard and responded to.
Time to face the facts: The Supreme Court has been compromised.
The next bill that comes along (doesn’t even have to be relevant) will be re-written to re-define the 2nd amendment.
This could happen in the hext few weeks/months. Let’s not kid ourselves and think it won’t happen - it just did!
Then they’ll re-define the 1st amendment. With John Roberts in their pocket, they could actually do all of this before November.