So, the vote is scheduled for some well-chosen moment, it gets "legally" passed and then the Repubs can safely say "Oh well, it was all done according to the constitution. We don't like it one little bit but we'll just have to live with it now."
I would hope tha the reruns would be smart enough to not allow this scenario.
Over the past couple of days there have been conflicting reports on this treaty and how it will effect gun control. Who do you believe? Certainly not the UN..