I'm happy to start, Mr. Viersen.
My understanding is that this is a fairly standard provision. I know you know that's not an answer in and of itself. My understanding of the reason for this provision is that the tax exemptions these tax treatment agreements deal with are not constitutionally protected. They are side agreements, and they don't have the same constitutional status that treaties or land claim agreements are given.
Having said that, I'll ask whether our counsel has anything to add.