Last year, Sen. Cynthia Lummis, R-Wyo., introduced the Diesel Truck Liberation Act to prevent individuals from being prosecuted for tampering with emission equipment.

Now, Rep. Mike Collins, R-Ga., has introduced a House version.

“American truckers and farmers are the backbone of this nation, but the EPA has treated them like criminals for maintaining their own equipment,” said Collins, who runs a trucking company. “The Diesel Truck Liberation Act codifies the work of EPA Administrator Lee Zeldin to free farmers and truckers from the radical federal emissions mandates of past Administrations and end the bureaucrats’ war on the working class. I am proud that we have an administration focused on delivering for the working class and putting common sense first.”

HR8079 was introduced on March 25 and already has six co-sponsors. Lummis introduced S3007 on Oct. 14, 2025. The bill was inspired by the story of Wyoming resident Troy Lake, who was sentenced to prison for removing emission controls from diesel engines.

“No bureaucrat in Washington should have the power to make you a criminal without Congress ever casting a vote,” Lummis said. “That is not how this country works. Democrats weaponized the EPA to squeeze rural America, and the costs have been staggering. The Obama and Biden DEF mandates drove up diesel expenses, hurt fuel efficiency, and piled crushing compliance costs onto farmers, truckers, and small business owners who had no say in the matter. I’m pleased to be working with Rep. Collins on this important issue.”

The Diesel Truck Liberation Act aims to:

• Stop federal agencies from requiring manufacturers to install or maintain emission control devices or onboard diagnostic systems
• Remove the EPA’s authority to enforce Clean Air Act requirements related to vehicle emission controls
• Protect individuals sued or prosecuted under federal law for tampering or improving emission equipment
• Codify the work of Rep. Mike Collins and EPA Administrator Lee Zeldin to prevent a new administration from changing course

On March 26, the EPA issued guidance to manufacturers to reduce operational headaches caused by DEF systems. LL