The boom in the production of shale oil has had an impact on the performance of various oil stocks. It has also led many to wonder why the price of gasoline has remained so high with so much additional supply. While the export of crude oil is highly limited, the export of refined product is not. This has benefited some oil stocks – including refiners Tesoro (ANDV) and Valero (VLO -0.32%) -- more than others.

In the following video, Fool.com contributor Doug Ehrman discusses how a change in U.S. policy on the export of crude could benefit certain oil stocks such as Exxon Mobil (XOM 0.02%) and Chevron (CVX 0.44%).