There may be two or three ways in which I'd like to approach your question.
First, the agreement does not dictate to Parliament what Parliament has to do. That is, Parliament has a choice over this legislation. If there were no Bill C-24, the agreement would fall apart. But it wouldn't be as if the two federal governments were able to come together and tell Parliament it must pass this bill. To the contrary, the architecture of the agreement is that this legislation was supposed to precede. And what preceded was the ways and means motion, which is a temporary act, not this definitive legislation.
So without advocating any position at all, I'm merely trying to clarify for you that when you say this is done and you're now compelled to adhere to the terms of the agreement through this legislation, I don't think that's exactly so.
You could elect not to pass this bill. If you did that, you would undo the agreement, because the bill is supposed to be about the export tax, and the export tax is absolutely a condition of the continuation of the agreement.
The main point I've raised this morning is that the other taxes--the surcharges, the income tax, and so on--were not part of the agreement, and there's no obligation to pass those in relation to the agreement.
But as to the export tax, if you elected not to pass that, which is your prerogative, you would undo the agreement. But it's not as if the two governments could dictate to Parliament that you have to pass this bill.