Providing congressional disapproval under chapter 8 of title 5, United States Code, of the rule submitted by the Environmental Protection Agency relating to "California State Motor Vehicle and Engine Pollution Control Standards; Heavy-Duty Vehicle and Engine Emission Warranty and Maintenance Provisions; Advanced Clean Trucks; Zero Emission Airport Shuttle; Zero-Emission Power Train Certification; Waiver of Preemption; Notice of Decision".

# Summary of HJRES 87 **What the Bill Does:** This bill cancels an Environmental Protection Agency (EPA) decision from April 2023 that allowed California to set its own stricter vehicle emission standards for heavy-duty trucks and buses. Under federal law, California has special authority to create tougher pollution rules than the rest of the country, but it must first get an EPA "waiver" granting permission. The EPA had approved California's request, but this bill overturns that approval, preventing California from implementing these emission standards. **Who It Affects:** The bill impacts California, truck manufacturers, public transit agencies, and companies operating heavy-duty vehicles in the state. It also affects the EPA's authority to grant waivers to states seeking stricter environmental rules.

The bill primarily affects California since no other state had adopted these emission standards. **Current Status:** The bill has already been signed into law. It was sponsored by Rep. John James (R-MI) and passed through Congress in the 119th Congress, meaning California's emission standards for heavy-duty vehicles have been blocked from taking effect.