Could I just say that I don't think substitution is a good idea. It's a bad idea. The reason is that federal departments and agencies have decisions to make, and they have to make decisions based on the best information they can gather. To hand over that authority to look at the information and figure it out to some other agency that has different interests and different priorities is just a mistake.
The joint review process is really the best. Sometimes we do run into problems because sometimes provinces don't necessarily want to allow the feds to come and play, so the committee might want to think about ways in which it can encourage joint reviews through amendments to the bill. That is the co-operative model. That's a better way to go. I think it ultimately results in better decisions.