Wyoming Sen. Cynthia Lummis (R-Wyoming) has introduced legislation that would effectively undo decades of Environmental Protection Agency (EPA) rules for diesel engines and ban emissions control devices and onboard diagnostic systems.
The “Diesel Truck Liberation Act” was inspired by the story of Wyoming diesel mechanic Troy Lake, who was sentenced to prison for “deleting” emissions systems. Lummis has reportedly sent a letter to President Trump requesting a pardon for Lake. According to Cowboy State Daily, Lake was sentenced to a year in prison in December 2024 for Clean Air Act violations, but he has since been released to serve home confinement.
The Biden EPA threw Troy Lake and other mechanics in prison for keeping school buses, fire trucks, and ambulances running in cold, harsh climates
He could have done that by installing DEF tank heaters and line insulation instead of removing the DEF system that makes the vehicles emit less poison.
Diesel Truck Liberation Act
… I’m flabbergasted, I don’t even know what to say to something so blatantly “this is temporary awesome for a very select few and horrible for everyone forever”
I think tractor-trailers are great, but have you ever had a 90s or earlier pre-emssions commercial truck pass by you on a city street? It alone stinks up the entire block when accelerating from a stop light.




