The oil export ban creates an artificially high oil price for oil sold on the world stage, and an artificially low oil price for oil sold in the US.
There is a price difference between the oil we import and the oil we produce in the US, with the oil we produce being cheaper. There is a bottleneck in the US with the crude we produce, so our crude sells at a discount to the world crude price.
You need to know that a lot of refineries are set up to refine imported heavy crude. Refineries are converting to be able to refine more light sweet crude, but the process takes time.
Dropping the oil export ban would do two things-
Increase the price of our domestic crude creating or saving jobs. Then it would drop the price of imported crude as world supply would increase.
Gee the right thing to do takes a little time and cost a little more up front. So your solution is to short circuit that process for short term gain. F that.