I will come back to the response I provided to your colleague, Mr. Albas, which is that the carbon pricing across Canada will make a significant contribution to reducing emissions in Canada. As such, it is considered to be a foundational measure within the pan-Canadian framework, but it is not the exclusive measure. It is not the only measure the federal government or the provinces are relying on to reduce emissions and to attain the Paris target.
On May 8th, 2018. See this statement in context.