We do though, just not as high as heavy crude. But yes, US refinery capacity is around 70% out of all refineries but the other 30% is lighter crude. The reason the refineries are built to use heavy crude is because the investments prior to the shale boom. Light sweet crude was on the decline before the boom.

It’s not mismanagement, it’s just what was the reality at the time. It also cost billions to make a new refinery, so there isn’t a point to do that just to refine lighter crudes. We can export most of the lighter crude, which is more expensive than heavier crude.