Trump Pardons Diesel Tuners Convicted Under Clean Air Act

Former President Donald Trump issued pardons to nine individuals convicted of violating the Clean Air Act, specifically related to the "diesel tuner" cases. These convictions stemmed from actions involving the removal or disabling of emissions control systems in diesel vehicles or the sale of equipment designed to facilitate such modifications. The pardons, announced on January 11, 2021, effectively overturn the federal convictions of these individuals.

The "diesel tuner" cases primarily targeted individuals and companies involved in the sale and installation of "delete kits" or "tunes" that bypassed or disabled emissions control systems on diesel trucks. These modifications were found to significantly increase harmful emissions, including nitrogen oxides (NOx) and particulate matter, contributing to air pollution and public health concerns. The Environmental Protection Agency (EPA) and the Department of Justice had pursued these cases vigorously, viewing them as critical to enforcing environmental regulations.

Among those pardoned was Dean A. Arnold, who was convicted in 2018 for conspiracy to violate the Clean Air Act and wire fraud. His case involved the sale of emissions-defeat devices for diesel trucks. Another individual, Justin W. Johnson, was pardoned for his conviction related to selling such devices. The pardons extend to other individuals who faced similar charges, including conspiracy, wire fraud, and violations of the Clean Air Act, with sentences ranging from probation to prison time.

Critics of the pardons argue that they undermine environmental enforcement efforts and send a message that violations of the Clean Air Act will be tolerated. Environmental advocacy groups and some lawmakers have expressed concern that these pardons could embolden others to engage in similar illegal activities. Conversely, supporters of the pardons, including some industry groups and the individuals themselves, have argued that the penalties were excessive and that the defendants were unfairly targeted. The pardons represent a significant intervention in ongoing environmental law enforcement actions.