The US now exports refined products. Doesn't sound like a refinery capacity shortage to me.
Another way to lower gasoline prices immediately is to end the mandate of "boutique blend" gasoline. End ethanol subsidies and import duties while you are at it. That would cut food prices.
Wow, we just reduced food and energy prices, take that Buckhead.
--I suppose the existing ones have been somewhat upgraded but would suppose new refineries with state -of-the art equipment and controls would be a plus---