So why can't that be produced here?It's not the straight that's the problem. Refineries in UAE, Bahrain, and Qatar that produce 20% of the worlds supply of high quality Group III base stocks that are used in most modern low viscosity synthetic motor oils were bombed by Iran in May and are currently out of production. They will not be rebuilt and brought back online for the foreseeable future, either. Not until the hostilities have been resolved. Even then it will take years to get that production capacity back.
It's a simple matter of supply and demand.
Petroleum products are a semi-inelastic class of product meaning it is very difficult for consumers (both industrial and end purchasers) to significantly reduce their consumption. The makes supply side shortfalls quite impactful in terms of price pressure. Economics 101.