Just super quickly, I want to correct the record.
There is some peer-reviewed research on the GHG intensity, the carbon content, of different forms of oil from around the world. Canada's is one of the worst. Masnadi et al. found that it was fourth dirtiest in terms of carbon content compared with 50 other regions in the world.
To say, then, that Canada's oil is somehow clean and will displace others in a way that's beneficial to the climate is nonsense. Any additional oil from Canada means more climate change.