Buying Back our own Oil?

Here's one for the "believe it or not" column.  The province of Alberta is a very large producer of crude oil, both traditional crude and synthetic crude from the oil sands.  The way I understand it, our crude is already being shipped out of province down to the United States, where it's processed into gasoline and shipped BACK to Alberta -- to be sold at huge mark-ups. 

I have also been told that there are refineries here in Alberta capable of making gasoline sitting idle or producing at a very low capacity.

I obviously don't understand this industry.  Shouldn't these companies who are exploiting an Albertan natural, non-renewable resource be working hard to put as many Albertans to work as possible?  Alberta has always been proud of its highly trained oilfield workers.  Albertan oilmen and women are being employed around the world to help others with their petroleum industries.

Yet jobs are disappearing here at home while our own crude is exported elsewhere so others in other countries may profit refining it!  Stranger than fiction.