Comment: from Wikipedia:

(See in situ)

In reply to comment: You can read about it here (see in situ)

from Wikipedia:

Ratification would require passage by a 2/3 majority of the U.S. Senate in addition to presidential approval, which is rendered unlikely by opposition from gun rights groups such as the National Rifle Association and Gun Owners of America, who claim that the treaty is an attempt to circumvent the Second Amendment and similar guarantees in state constitutions in order to impose domestic gun regulations.

http://en.wikipedia.org/wiki/Arms_Trade_Treaty

Let's hope it doesn't pass.