Glencore Grad Program - Second Round Question

What are the risks associated with bringing oil from West Africa to the US?

For this question, could these just be general risks? Like the potential for the quality / volume not being the one agreed to during boarding, demurrage, quality damage / loss of goods at sea, and price of barrels going so high that that begins to significantly affect one's variation margin on the paper side. Also, to hedge this, assuming one bought the oil with prompt loading in the spot market, would one just need to short a WTI / Brent futures contract to hedge the sell? If the delivery for one buying the WAF crude was not immediate but to be delivered in 30 days, would these type of futures contracts - Brent / WTI - also be the ones to hedge (lock-in the buy price)?