Canada offered the oil to the U.S. — the U.S. refused to take it. What are we supposed to do? Sit on it, in case some day the U.S. might decide that it wants the oil sands oil after all?
Over the past several years, I've posted several lamentations about the U.S. leftist-sponsored international environmentalist organizations, which are bent on shutting down all oil-sands production. I've also posted about the collection of big-city mayors, and state governors, who were taking or considering ways to boycott the oil-sands oil.
If the U.S. wants the oil — you have only to ask. If you don't want it; why would you even care what we do with it?
Obama is not America. He is not king. Arguably, he is not a legitimate president. So find a better argument.