Trump Pardoned 20 People and Six Companies for Disabling Diesel Pollution Controls
Chapter 1 — Trump Forgave Commercial Pollution Offenses
Chapter 2 — The Businesses Sold Bypasses and Hid Their Conduct
Chapter 3 — The Cost and What the Pardons Left
1 · Trump Forgave Commercial Pollution Offenses
1.1 — Twenty People and Six Companies
1.2 — The Strongest Case for Mercy
Trump said he was freeing people persecuted for fixing their cars. On July 3, 2026, and September 3, he pardoned 20 people and six companies for diesel pollution offenses, tax evasion and obstruction among them. One company admitted selling about 22,000 deletion devices for about $14 million.
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Senator Dan Sullivan argued that emissions-system failures could endanger Alaskans in extreme cold and requested a pardon for Mackenzie Spurlock. The Justice Department stopped pursuing criminal cases over onboard-diagnostic tampering. Trump granted Spurlock the full pardon Sullivan requested, but the cold-weather argument does not explain the tax evasion and false EPA response the grants also forgave.
2 · The Businesses Sold Bypasses and Hid Their Conduct
2.1 — Twenty-Two Thousand Devices, Fourteen Million Dollars
2.2 — Tax Evasion and a False Answer to EPA
GDP Tuning admitted selling devices that let drivers remove pollution controls without triggering the truck's diagnostic response. Its admitted sales came to about 22,000 devices and $14 million. Trump pardoned its owner and both companies in the Idaho case.
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Matthew Geouge grossed more than $10 million in sales through 2019, kept selling emissions bypasses after EPA warned him and concealed taxable income. Isaac Allen gave EPA a false response that understated his business's tampering. Trump pardoned both, including Geouge's tax evasion and Allen's obstruction.
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3 · The Cost and What the Pardons Left
3.1 — The Cost Fell on People Breathing the Exhaust
3.2 — What the Pardons Canceled and What They Left
Daniel Chase's shop altered at least 144 diesel trucks in Alaska. An EPA investigator projected in 2023 that the work would put more than 144 tons of nitrogen oxides and more than a ton of particulate matter into the Mat-Su Valley's air. Trump pardoned Chase on September 3, 2026.
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As of October 10, 2026, the pardons stand, canceling whatever criminal punishment remained. The convictions stay on the record, and EPA still described a separate $7 million civil settlement with Aaron Rudolf and his company after his pardon. Trump's forgiveness of multimillion-dollar pollution businesses warrants an impeachment inquiry.
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Full Source Index
Primary Sources
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Secondary Sources
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