Big news: California’s iron grip on the automotive market could finally be over!
The Stop CARB Act, introduced in the U.S. Senate as part of larger legislative efforts to address vehicle regulations, is generating a lot of buzz for its aim to curb the influence of the California Air Resources Board on national auto standards.
Whether you’re a truck enthusiast, a daily commuter, or an auto industry worker, this bill touches your life.
This bill seeks to limit CARB’s ability to set stringent emission rules that impact not just California but 17 other states. As debates over vehicle costs, consumer choice, and environmental regulations heat up, the Stop CARB Act could reshape how cars are built and sold across America.
What is the Stop CARB Act?
The Stop CARB Act is a proposed piece of legislation focused on restricting the California Air Resources Board’s authority to enforce its own vehicle emission standards, particularly those stricter than federal regulations.
While the bill is often discussed in connection with the Transportation Freedom Act (S.711), introduced on February 25, 2025, by Sen. Bernie Moreno (R-Ohio), the Stop CARB Act specifically targets CARB’s waivers under the Clean Air Act. The bill aims to eliminate these waivers, preventing California from dictating emission policies beyond its borders and blocking other states from following its lead.
Currently, S.711, which includes provisions aligned with the Stop CARB Act’s goals, is pending in the Senate Committee on Finance, with no floor vote scheduled as of September 3, 2025.
Sponsored by Sens. Moreno, Jim Banks (R-Ind.), Tim Sheehy (R-Mont.), and Jim Justice (R-W.V.), the broader Transportation Freedom Act also seeks to repeal federal emission standards, such as the EPA’s Multi-Pollutant Emissions Standards for 2027 and later model years and Phase 3 heavy-duty vehicle greenhouse gas rules, while offering tax deductions for auto manufacturing wages. The Stop CARB Act’s focus on CARB makes it a key component of this larger deregulation effort.
Why do we need it?
CARB’s influence stems from a unique provision in the Clean Air Act, which allows California to request waivers to set stricter emission standards than the federal government. Since the 1970s, CARB has used this authority to implement rules like the Advanced Clean Cars II program, which mandates zero-emission vehicles by 2035.
Seventeen other states, representing over 40% of the U.S. population, have adopted CARB’s standards, effectively giving California outsized influence over national auto markets — even though it arguably violates the Constitution.
The Stop CARB Act argues aims to remedy this in a few key ways:
Reducing costs for consumers: CARB’s strict standards require automakers to invest heavily in technologies like electric vehicles or advanced combustion engines. These costs often raise vehicle prices, with estimates suggesting compliance could add thousands to the sticker price of new cars. By limiting CARB’s waivers, the bill aims to lower these costs, making vehicles more affordable for everyday Americans.
Streamlining regulations: The patchwork of federal, California, and state-adopted CARB standards creates complexity for automakers. Companies must design vehicles to meet multiple requirements, increasing production costs and delaying innovation. The Stop CARB Act seeks to establish uniform federal standards, simplifying compliance and fostering a more predictable market.
Preserving consumer choice: CARB’s push for zero-emission vehicles by 2035 limits the availability of gas-powered cars, trucks, and SUVs, which many drivers prefer for their affordability, range, or utility. The bill aims to protect consumer choice by preventing California’s mandates from dominating national markets.
Supporting U.S. manufacturing: Companies like General Motors, Stellantis, Toyota — as well as the National Automobile Dealers Association — argue that CARB’s rules strain manufacturers, particularly smaller suppliers. By curbing CARB’s influence, the bill could reduce compliance costs, boost domestic production, and create jobs.
RELATED: Ride or die: How Ford, Honda, VW, and 3 more got stuck with California’s strict emission standards
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The bill’s progress is uncertain, given the polarized views on environmental policy and state rights. If scheduled and it passes the Senate, it must clear the House and gain presidential approval. Legal challenges from California or environmental groups could also delay implementation if the bill becomes law. The next goal is to get this bill on the floor to vote on it.
Whether you’re a truck enthusiast, a daily commuter, or an auto industry worker, this bill touches your life. Will it lower vehicle costs and preserve your choice of gas-powered cars? Or will California continue to tell you what to drive? It’s time to reach out to your senators and representatives to tell them to get this bill to the floor.
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