The Ontario Government has announced it will be filing its own reference case challenging the Trudeau carbon tax. Ontario previously announced it would be supporting and intervening in Saskatchewan’s reference case. Premier Scott Moe says this province will be having a close look at the Ontario case and will strongly consider intervening in that case. Moe says his government has recently filed its constitutional argument against the carbon tax. It is the province’s contention that under the constitution, provinces are sovereign in their assigned areas of jurisdiction and that the carbon tax is illegitimate because it apples only in those provinces that have not exercised their own jurisdiction in a way that the federal government thinks they should.