I would debate your point. Several previous governments, not just the most recent one, have done a variety of things to reduce air pollutants. Through the acid rain strategies, we have had great reductions in SOx pollutants—sulphur oxides and nitrogen oxides. Through the U.S.-Canada Air Quality Agreement, we've reduced both of those pollutants drastically over the last 20 years—
On February 13th, 2007. See this statement in context.