Mr. Chair, yes, indeed, in answer to my colleague, the development of the air quality management system has been done over recent years in very close collaboration with the provinces and the territories. In recent talks that I have had with my American counterpart at the environmental protection organization, we have talked about a possible future treaty along the lines of the acid rain treaty which would take ambient air quality standards to a new and better continental high.
In the House of Commons on May 15th, 2012. See this statement in context.