I think the answer you're going to get from each of us will probably be an answer about the existing authorities under the statutes that are administered by each of our departments. The question of whether in totality those give the government adequate authorities I think is a question that's probably beyond each of the witnesses, and that indeed would have to include other authorities such as the fiscal powers within the Government of Canada.
In terms of the legal capacity to regulate emissions of greenhouse gases from major sources in Canada, the Canadian Environmental Protection Act provides broad authority to regulate the six greenhouse gases that are currently named on the list of toxic substances.