Lummis introduces Diesel Truck Liberation Act legislation

CHEYENNE (WNE)  — U.S. Sen. Cynthia Lummis, R-Wyo., on Oct. 15 introduced The Diesel Truck Liberation Act, legislation to “end the Obama and Biden EPA’s war on truck owners and mechanics,” a news release from Lummis’ office said.

The bill was inspired by Wyoming resident Troy Lake’s prosecution and imprisonment, the release said.

If passed into law, the bill would:

. Prohibit the federal government from requiring manufacturers to install or maintain emissions control devices or onboard diagnostic systems.

. Remove EPA authority to enforce Clean Air Act requirements related to vehicle emissions controls.

. Forbid the federal prosecution or federal lawsuits against individuals for tampering or improving emissions equipment.

. Vacate existing prison sentences for emissions-related violations and expunge criminal and civil records related to these offenses.

“The Biden EPA threw Troy Lake and other mechanics in prison for keeping school buses, fire trucks, and ambulances running in cold, harsh climates,” Lummis said in the release. “When Washington bureaucrats can make you a criminal without Congress ever voting on it, we have a huge problem. I want this overreach to end. Democrats weaponized the EPA to wage war on rural America, and we cannot let that happen again. This legislation is the first step toward justice and sanity.”

This story was published on Oct. 22, 2025.