With regard to the carbon tax: (a) how much will the $50 per tonne carbon tax reduce CO2 emissions in each of the next three years; and (b) if the answer to (a) is not a number, is the government’s refusal to divulge the number because the government does not know the number, or because releasing the information would be embarrassing for the government?
In the House of Commons on June 1st, 2018. See this statement in context.