We're particularly good at refining heavier, sour crude, but the sharp declines in Mexican and Venezuelan oil production and exports, and pipeline capacity from

We're particularly good at refining heavier, sour crude, but the sharp declines in Mexican and Venezuelan oil production and exports, and pipeline capacity from Canada maxing out has left us with overcapacity for those grades of crude. I wasn't able to confirm this with a few minutes of searching, but as I recall heavier Saudi crude has become attractive for this reason, plus Saudi Aramco fully owns Port Arthur, our big refinery, as of 2017.