I'd suggest since this is 'American' oil, and tons and tons of it is freely given to the oil companies, they have to keep it in the American market...That'd be different, wouldn't it...
freely given?
Just hops from the ground into their refineries huh?
Are you willing to take a smaller salary or sell whatever you produce for less within America if you could get more internationally? There is a concept called opportunity cost in financial analysis which states that the true cost of using some resource is the higher of actual production costs OR the highest lost opportunity cost of using or selling that resource for some other purpose. If you could produce a barrel of oil for $7, but you could sell that barrel on the world market for $55, it is costing you $55 dollars to use that barrel of oil not $7, and this would be in accordance with generally accepted accounting practices.
That would be nationalization.
What are you talking about? Do you not understand leases, royalties and taxes?