The concept that US Refineries can't process domestic crude because it is too light is BS. As a Chemical Engineer who worked in the US Petroleum industry for 5 years, I know that crude oil processing units have a useful life of between 7 to 10 years. At the end of a unit's useful life, the unit undergoes what is called a "Turn-Around" where things used in the units, like catalysts on the surface of ceramics used to break down the oil into smaller hydrocarbon chains, are not performing as required. Critical unit components which breakdown due corrosion and components used to facilitate the reactions required are replaced. We are being told that US Refineries can't refine US Oil. My response to this perform a "Turn-Around" on the units they are saying can't process the oil and replace those components with new components, e.g. using ceramics impregnated with the catalyst required because it is being done in the off shore refineries our oil is shipped to. This is just stall game by the Petroleum Processing Industry.
Hey President Trump, why not sign an executive order that US Refineries must be able to process US Oil. That might solve the problem.