Examining the Global and Domestic Impact of a Proposed US Diesel Export Ban

Diesel prices hit $6.50 per gallon (3.79 litres) on Friday as ongoing geopolitical tensions between the United States and Iran, alongside the war between Russia and Ukraine, continue to disrupt critical oil and fuel trade routes. According to the American Automobile Association (AAA), the average price for a gallon of diesel reached $6.50, rising significantly from $5.61 a month prior.

This sharp increase has led the administration of US President Donald Trump and various Republican lawmakers to weigh potential restrictions on US diesel exports ahead of the upcoming midterm elections. A Reuters/Ipsos poll from August revealed that 47 percent of voters view the cost of living as the single most critical factor for their midterm vote, outweighing issues like democratic values. Furthermore, a Marist poll showed that 42 percent of Americans trust Democrats more to handle the economy, compared with 34 percent for Republicans.

Amid these political pressures, US Energy Secretary Chris Wright stated on Thursday that he has been in communication with major oil refiners to discuss interest in a potential voluntary restriction on diesel exports, as reported by the Reuters news agency. This followed statements from President Trump on Tuesday expressing support for limiting diesel exports from the US, which stands as the world's largest diesel exporter. Nevertheless, energy analysts and industry groups caution that an export ban could trigger unintended consequences and drive fuel prices up both domestically and internationally.

Why are diesel prices so high?

Diesel is traded on a global market despite the US being the world's largest exporter. Refinery disruptions in Russia and the Middle East have decreased global fuel availability, increasing pressure on US producers. For instance, drone attacks in Russia have damaged major refineries, resulting in production cutbacks and halts.

Rachel Ziemba, senior adjunct fellow at the Center for a New American Security, noted to Al Jazeera that while US refineries are operating at full capacity, global supply gaps persist. US diesel inventories dropped to 107.9 million barrels by September 11, marking a more than four-decade low according to the US Energy Information Administration. High global prices attract American producers to sell internationally rather than lower prices for domestic buyers.

Why is the US considering an export ban?

Lawmakers in Washington, DC, have explored halting or slowing US diesel exports. Republicans advocate for restrictions to lower consumer costs ahead of the midterm elections, noting that diesel is essential for hauling food and goods via trucks. US diesel exports currently equal about 40 percent of domestic consumption.

On Tuesday, Republican Senator Chuck Grassley of Iowa urged President Trump to implement a temporary export embargo through executive action. Republican Senator Dan Sullivan of Alaska similarly called for a temporary pause on American diesel exports to rebuild reserves ahead of winter. In the House of Representatives, Congressman Tim Burchett of Tennessee introduced two bills aiming to restrict US diesel exports—one proposing a ban through January 2027 and another restricting exports if the national average hits $5 a gallon.

The White House told Al Jazeera that the president is currently evaluating all options, though no official policy announcements have been made.

Industry experts argue that a ban could exacerbate price hikes. Patrick De Haan, head of petroleum analysis at GasBuddy, explained on X that forcing lower prices could cause refiners to produce less diesel, ultimately leading to reduced supply and higher prices.

How would an export ban work?

A ban would restrict US refiners from selling diesel overseas, theoretically keeping more fuel domestically. However, research and consulting firm Wood Mackenzie warns that this would fill US storage tanks and force refineries to cut production. This could heavily impact regions relying on US fuel, such as Latin America and Europe, forcing them to compete globally and drive up international prices. Wood Mackenzie identifies China as the only major producer with enough spare refining capacity to potentially offset this loss, though Beijing may choose not to intervene.

An analysis by S&P Global also indicated that a complete ban could reduce production by up to 750,000 barrels a day as storage fills with unsold diesel, potentially turning the US into a net importer of petrol by the fourth quarter.

Who would an export ban affect?

An export ban would impact US refiners, consumers, and nations dependent on American diesel. Maksim Sonin, a visiting scholar at Stanford University’s Precourt Institute for Energy, told Al Jazeera that trade-offs are inevitable and refiners are unlikely to support a blanket ban. Analysts like Rachel Ziemba suggest the US may instead pursue a mix of voluntary quotas, incentives, or exemptions for countries providing crude oil, such as Mexico.

Additionally, industry groups like Airlines for America have warned that an export ban could raise prices for airlines and travelers. Analysts emphasize that restricting exports fails to resolve underlying supply issues and could ultimately increase fuel prices globally and domestically.