Foreign policy (such as it is) is driving the increase in cost differential between gas/diesel, and is having a huge affect on winter heating oil and a rise in the cost of LNG. They're shipping it to Europe to fight Putin. Europe doesn't want our gasoline.

A sidebar about the cost differential between gas/diesel... Prior to the introduction of ULSD in 2007, the US petro market couldn't export diesel fuel to Europe because they were ahead of us in diesel fuel emissions regulations. That all changed in 2007 with the introduction of ULSD here in the US - not surprisingly, EU's diesel fuel regs matched those in the US almost perfectly. As a result, the US diesel fuel market suddenly became a world-wide commodity.