Let us cross that bridge when we come to it. However, right now, the House is powerless.
Don’t be suprised if the current version of the appropiations bill has this stuck into it.
And, Federal legislation is a much harder thing for a President to break, should we win in 2012. So, even if the treaty does pass, if a piece of legislation is passed by the House and Senate, and signed by the President, it would make it that much harder for a future President to break the treaty as it will also be Federal law. Presidents can break treaties at will, but not regular legislation. And, the Dems would include such a poison pill to hamstring a future administration.