The chief justice—and I think it's the last paragraph of the impact assessment decision that was just released—talks about co-operative federalism, which I think is what you're getting at. He also talks, in the first paragraph, about the fundamental value of the environment and the right of Canadians to a safe environment.
The jurisdiction is shared in Canada, so there needs to be work done within the spheres of jurisdiction at the federal level, at the provincial level, at the municipal level and with indigenous communities as well.
Carbon pricing and regulation of greenhouse gas pollution are clearly within the federal realm. The federal government does not have to worry about the effect of the Impact Assessment Act decision on its signature pieces in terms of climate change mitigation measures.