I would just add that we have the investment Canada process, and it can always be tweaked. Certainly when CNOOC acquired Nexen it was required to commit to a number of undertakings, which it may or may not have done. Things are little hard to enforce sometimes after the fact.
I wouldn't disagree that we should keep our minds open, that there is always a possibility for regulation to evolve. At the moment, it's gone in the direction of somewhat lighter regulation. If there were an experience or reason to think it should be tightened or tweaked in certain areas, that's certainly within the purview of the government to consider.