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Lummis Bill on Diesel Engines Gains NFIB’s Support

Lummis Bill on Diesel Engines Gains NFIB’s Support

March 20, 2026

Wyoming Senator seeks to repeal troublesome EPA mandate leading to shutdowns

The nation’s leading small business association announced its support for legislation sponsored by Wyoming U.S. Sen. Cynthia Lummis that would repeal U.S. Environmental Protection Agency (EPA) guidelines on diesel emissions.

“Current EPA emissions system rules mandate that engines shut down when diesel exhaust fluid (DEF) does not reach certain operating temperatures,” wrote NFIB principal for Federal Government Affairs Louis Bertolotti in his letter of support for Sen. Lummis’ S3135. “This mandate is intended to reduce emissions. However, DEF freezes at 12 degrees Fahrenheit. In cold weather states like Alaska, where temperatures can fall below 12 degrees for extended periods of time, these rigid rules negatively impact small businesses and consumers. Moreover, an engine shutdown can cause serious harm to farmers or truck drivers who could be left stranded in remote locations in sub-zero temperatures.”

Upon introducing the bill, Sen. Lummis said: “Climate-alarmist bureaucrats in Washington do not understand that the consequences of their radical agenda are hurting real people in western communities. I am proud to join Senator Sullivan in correcting the Obama and Biden administrations’ disastrous policies and ensuring folks don’t get stranded in their ‘EPA-compliant’ vehicles, even during the harshest winter weather. The people of Wyoming should not have to choose between breaking the law or losing their lives.”

“The Washington bureaucrats who crafted the EPA’s guidelines on diesel emissions, have obviously never experienced a winter in Wyoming,” NFIB State Director Michael Smith said. “On behalf of our members across the state, I thank Sen. Lummis for championing this commonsense reform to eliminate this misguided mandate and provide greater flexibility to hardworking truckers, farmers, and small business owners that rely on diesel fuel to keep our economy thriving.”

Bertolotti concluded his letter, writing: “NFIB supports repealing this burdensome rule which unnecessarily harms diesel engine reliability and increases energy costs for small businesses. We look forward to working with you to advance this bill and help ensure continued American energy dominance.”

S.3135 currently in the Senate’s Committee on Environment and Public Works.

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