Canada may be about to do something it hasn’t managed in nearly two decades: clear political space for a brand-new oil pipeline to the Pacific. Ottawa and Alberta are preparing to unveil a memorandum of understanding that would carve out exemptions to federal regulations that have long scared off investors — a move that, if it sticks, could rewire the outlook for Canadian crude exports. The deal, as reported by Bloomberg, hinges on a trade: Alberta gets a pathway to coastal access, and Ottawa gets tougher carbon-pricing commitments…