US diesel export ban A political quick fix that could make the problem worse

Key arguments

• An export ban would redistribute an existing global shortage rather than create additional diesel supply.
• Exports give Gulf Coast refiners an outlet to run at high utilisation; restricting them could fill storage and force throughput cuts, reducing diesel, gasoline and jet fuel output.
• The US supplies roughly 1.5 million barrels per day of seaborne diesel, close to 20% of globally traded volumes, so removing barrels would raise international prices and refining margins.
• Higher international prices would feed back into the US, especially import-dependent regions, and raise costs for trading partners.

Corresponding source evidence

1. • Political appeal, economic risk: Speculation the US administration could introduce an export ban on diesel has widened WTI's discount to Brent while driving the Brent-gasoil spread to a fresh record • A US diesel export ban could temporarily boost domestic inventories and ease prices, but it would redistribute rather than solve the underlying global shortage.
2. • A ban could ultimately reduce fuel supply: Once Gulf Coast storage fills, refiners may be forced to cut throughput, reducing production of diesel, gasoline and jet fuel while removing up to 1.5 million barrels per day of diesel from an already tight global market.
3. Speculation about a US diesel export ban is already creating distortions elsewhere in the barrel, with the WTI discount to Brent widening to around USD 9.5 per barrel as traders price the risk that export restrictions could reduce US refinery demand for crude.