Let's take a concrete example. The Taseko Mines project in northern B.C. proposed a gold mine. The B.C. environmental assessment office approved the project. They gave it the stamp of approval. The current federal government, under the jurisdiction of Minister Prentice, took a hard look at the project, and, based on the recommendation of a joint review panel, said, “No, this project ought not to go forward. It's not in the public interest.”
If that assessment had not been done federally, that project would have gone forward. It may still go forward. It's being reviewed again. The idea here is that there is a federal role for environmental assessment. If it's not done, then we're going to enter a new era in which decision-making around projects is reviewed only by one jurisdiction for a certain limited number of factors, and it won't necessarily be comprehensive, the way it can be done now. That's not to say that the situation right now is perfect. By no stretch of the imagination can it be said to be a law that can't be improved. Certainly, there are processes that could be improved.