Again, it is difficult to build that within the four corners of a statute like this. Probably the best you can do is to make sure the statute is consistent with it and has some kind of portal or crosswalk to some kind of Canadian emissions effort-sharing agreement that runs in parallel.
The risk in trying to incorporate some requirement to achieve some kind of effort-sharing agreement within the statute is that—and this is a bit cynical, but you'll appreciate it—it would build in a veto. If this act required the federal government to execute some kind of effort-sharing agreement with all provinces, any province would then immediately be able to say that it's not going to sign it and it's not going to engage.