The Diesel Ban Boomerang

Trump wants to keep American diesel at domestically. The countries that buy it, and the U.S. debt they hold, could make that an expensive idea.

The Diesel Ban Boomerang
Photo by engin akyurt / Unsplash

Diesel averaged $6.50 a gallon nationally on Friday, according to AAA, up from $5.61 a month earlier.¹ On Sept. 23, Politico reported that the White House was preparing a 90-day ban on diesel exports and that President Trump wanted to announce it by the end of last week.² The week ended without an order. Energy Secretary Chris Wright has since told the Wall Street Journal the administration is weighing restrictions short of a full ban.³ He's also been calling refiners to see whether they'd cut exports voluntarily.¹

Why Washington wants the fuel home

U.S. diesel inventories fell to 107.9 million barrels as of Sept. 11. That's the lowest in more than four decades, per the Energy Information Administration.¹ The U.S. is the world's biggest diesel exporter, and Rachel Ziemba of the Center for a New American Security says those exports equal about 40% of what Americans burn.¹ Senators Chuck Grassley and Dan Sullivan have both called for a temporary halt.¹ With the midterms about five weeks out and a Reuters/Ipsos poll showing 47% of voters rank cost of living as their top issue, nobody should be surprised that Republicans want a fix voters can see.¹

Wisconsin is already feeling it. Diesel here hit a record $6.12 a gallon in mid-September, just as harvest got going.⁴ Kendall farmer Joel Greeno told WPR he's run up heavy credit card debt to fuel and run his equipment. Farm bankruptcies in the state have ticked up for a second straight year.⁵ Paul Mitchell, who studies farm economics at UW-Madison, summed it up in three words: "Those prices hurt."⁶

Why the math does not cooperate

Refineries don't come with a diesel-only setting. Gasoline, diesel and jet fuel all come out of the same barrel of crude, so cutting one tends to cut the others. The Energy Policy Research Foundation warned that Gulf Coast refiners who lose their export buyers would watch their tanks fill up. Then they'd slow down and catch up on maintenance they've been putting off, which means less of every fuel.⁷ Wood Mackenzie expects the same pattern. S&P Global estimates a full ban could cut production by as much as 750,000 barrels a day and turn the U.S. into a net gasoline importer this quarter.¹

That gasoline would have to come from somewhere, and a lot of it comes from Europe. The U.S. ships diesel across the Atlantic and Europe sends gasoline back. The oil industry is worried Europe could answer a diesel ban by cutting off the gasoline, one analyst told CNBC.³ GasBuddy's Patrick De Haan compared diesel to corn. Farmers don't give Americans a discount, and refiners won't either.¹

European imports

Europe walked into this on purpose, sort of. Before sanctions, Russia supplied 53% of Northwest Europe's seaborne diesel imports. Once the EU ban took effect in February 2023, that share fell to 2%.⁸ American refiners filled much of the gap.

So far this year, the U.S. has supplied about 32% of the diesel the EU imports from outside the bloc, up from 17% in 2025, according to Kpler data reported by Euronews. In Northwest Europe the figure is about 57%.⁷ France gets 36% of its imported diesel from the U.S. and has closed refineries at Grandpuits and Donges. The UK sits at 26% after losing Grangemouth.⁷ French President Emmanuel Macron called the proposed ban "catastrophic."⁷

Europe doesn't have many other places to turn. India's diesel shipments to Europe have dropped from about 163,000 barrels a day to roughly 50,000.⁷ Wood Mackenzie says China is the only country with real spare refining capacity, and it may decide helping isn't in its interest.¹ European diesel prices have already more than doubled since the start of the year.⁷ Most U.S. fuel exports go to Latin America, Ziemba noted, so buyers there would be bidding for the same cargoes.¹

Europe's bond card

This is where a fuel fight could turn into something bigger. Europe buys American diesel, and it also lends America a lot of money. At the end of 2025, 13 European countries held about $3.4 trillion of the $9.27 trillion in Treasury securities held abroad.⁹ The UK led at $863 billion, followed by Belgium, Luxembourg, France and Ireland. Those numbers come with a big asterisk. Treasury tracks where bonds sit in custody, and it says the data can't reliably show who actually owns them.¹⁰ Throw in stocks and Deutsche Bank strategist George Saravelos figured in January that European countries own $8 trillion in U.S. bonds and equities, almost twice the rest of the world combined.¹¹

Europe has floated this once before. During the Greenland standoff in January, Danish pension fund AkademikerPension said it would sell $100 million in Treasuries. Treasury Secretary Scott Bessent said he was "not concerned at all," and Trump promised "big retaliation" if Europe dumped U.S. assets.¹²

We couldn't find any reporting that a European government has linked Treasuries to the diesel fight. Foreign holdings did fall $50.4 billion in July to $9.25 trillion, the lowest since October, with France leading the drop along with Canada.¹³ Treasury warns those monthly figures are hard to read with precision.¹⁰ July also came weeks before anyone floated a diesel ban, so treat it as background for now.

What a sell-off would actually do

The timing couldn't be much worse for Washington. On Sept. 24 the 30-year Treasury yield hit 5.501%, its highest since June 2004, and the 10-year reached 5.223%, a level last seen in 2007.¹⁴ When a big holder sells, bond prices fall and yields climb. The 10-year is the benchmark for mortgages, consumer loans and business borrowing.¹⁵ A European sell-off would reach Brown County through home loans, car payments and business credit lines. The Fed raised rates earlier this month for the first time since 2023, and a five-year note auction last week drew weak demand.¹⁶

Still, Europe would be shooting itself in the foot. Pepperstone strategist Michael Brown said in January that a dump would send Treasury prices down hard and push up borrowing costs across the eurozone too. He thinks a more realistic move would be a quiet buyers' strike at Treasury auctions, though even that would be hard to organize. Fortune also reported that analysts see the U.S. holding "escalation dominance" in any debt war.¹⁷ Most of those bonds sit with private pension funds and banks rather than governments, which makes a coordinated sale hard to pull off.¹²

Great! You’ve successfully signed up.

Welcome back! You've successfully signed in.

You've successfully subscribed to Fox Watershed.

Success! Check your email for magic link to sign-in.

Success! Your billing info has been updated.

Your billing was not updated.