I'd just like to add a comment to your last question, which concerned whether this protects us against future Buy American restrictions.
At the federal level it doesn't. We consulted with some trade lawyers during the negotiations. There are some limits on the President's powers. He cannot give us an exemption for legislation that does not yet exist. That was part of the problem during negotiations. That's why they put in place a mechanism for trying to resolve these issues if they arise again in the future. This does, however, protect us against buy local provisions in those 37 states that have signed on to this WTO agreement.
So the answer is yes and no, but the agreement takes that into account by providing for this special mechanism.