On a macro level this will have no effect on the economy unless the money is saved, i e put in a mattress, or spent externally. Do we need infrastructure spending? If we need additional funds then we need to pay for it and this seems like a good source of funding.  Let's be clear, the Conservatives are not only inferring that AGW is a hoax but that we can't afford new infrastructure. The Conservatives are saying we can't afford climate change but we can afford gridlock.

Conservatives support Trump's infrastructure spending with no new carbon tax. Those Conservatives love deficit financing, eh? A Conservative would have you believe that Trump's infrastructure spending sans carbon tax makes sense but Trudeau's infrastructure spending avec carbon tax is senseless.  A 'Fiscal Conservative' would say if we are spending new money on infrastructure we need a new tax as well.