They are claiming to sell 100% American gas.
If it is made from Canadian oil, every other oil refinery in America could claim the same thing, even with imported oil from anywhere.
every other oil refinery in America could claim the same thing,
Those east coast refineries get their oil from Africa and the middle east. There are no pipelines running from Canada to the east coast. They could be getting cheaper GOM oil but there are US laws stopping them.