Answer, It is Canada's claim, according to a law that has not been revised since the 1800s. We transport every bit of our oil to
California for refining. We do not refine north slope crude at the north slope. Ya think it is Because of the environmental implications? Canada has miles of earth already destroyed by open pit tar sand extraction.
We will send them dirt to refill this massive hole that can be seen from space.
Canada want's to open pit mine every where, including Canada, so I am with that.