One of my Senators voted 'Nay' and the other didn't vote.
From the Wiki article on the treaty:
"Anti-gun treaty proponents continue to mislead the public, claiming the treaty would have no impact on American gun owners. That's a bald-faced lie. For example, the most recent draft treaty includes export/import controls that would require officials in an importing country to collect information on the 'end user' of a firearm, keep the information for 20 years, and provide the information to the country from which the gun was exported. In other words, if you bought a Beretta shotgun, you would be an 'end user' and the U.S. government would have to keep a record of you and notify the Italian government about your purchase. That is gun registration. If the U.S. refuses to implement this data collection on law-abiding American gun owners, other nations might be required to ban the export of firearms to the U.S." 
Given the senate votes were pretty much along party lines, it's getting clearer and clearer what some peoples' intentions are.