On June 3, President Barack Obama will sign the U.N. Arms Trade Treaty (ATT)

http://www.breitbart.com/Big-Government/2013/05/29/Obama-To-Sign-International-Gun-Control-Treaty-On-June-3rd

The ATT passed in the U.N. General Assembly by a vote of 153-4 on April 2.
This treaty is ostensibly aimed at putting an end to gun trafficking across international boundaries, and both Breitbart News and the NRA have argued that it will eventually require an international gun registry in order to be enforceable. 
The ATT also provides the executive branch of our government with broad powers for controlling which guns do and don't come into the country, and includes ambiguous language that a gun-control-friendly administration can use to its advantage.
Even though Obama will sign this treaty, it is not enforceable in the U.S. until the Senate ratifies it by a two-thirds majority. 

Correction Mr. President, the United States of America  is not a Democracy, we are and remain a Constitutional Republic.