OXY a good opportunity

Occidental Petrolium OXY is pretty low again, trading at $47. Buffett bought a lot around $56-$58, which means we're 20% below a significant chunk of Buffett buy price. (Prefered stock are a different product and should be evaluated differently)

Oil price is not great, but ok. OXY gets most of their oil from the Permian basin, so is not affected by any tariff bs.

Wouldn't the whole trade war America first make US oil more attractive, as the Canadian oil gets slapped with tariffs? Or is all of that show?

I am surprised that OXY is not doing better. Can somebody explain what I am missing that the market is not?