Oh boy not this again..........LOL
Yes. There has been talk in the UN about a "small arms treaty" however, the chances of the US signing are very slim. Remember that even if Obama signs it, the treaty still needs the approval of 2/3rds of the Senate to actually be adopted.(Article 2 section 2 clause 2) Also no treaty can trump the Constitution For The United States. So any treaty violating the Constitution, would be null and void.