Arizona Attorney General Kris Mayes sued FCA US LLC (d/b/a Fiat Chrysler Automobiles) and Cummins, Inc. (Cummins) alleging that the engine and vehicle manufacturers violated Arizona consumer protection laws by installing illegal defeat devices to bypass vehicle emissions control equipment in diesel engines on certain RAM pickup trucks, leading to excess emissions. As alleged in…

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West Virginia AG Patrick Morrisey and Kentucky AG Russell Coleman co-led a coalition 26 Republican AGs in challenging the National Highway Traffic Safety Administration’s Corporate Average Fuel Economy Standards for Passenger Cars and Light Trucks for Model Years 2027 and Beyond and Fuel Efficiency Standards for Heavy-Duty Pickup Trucks and Vans for Model Years 2030…

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A group of 19 Republican AGs filed a Rehearing Request to FERC asking it to reconsider its Building for the Future Through Electric Regional Transmission Planning and Cost Allocation Final Rule, which requires transmission providers to conduct long-term regional planning.

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A group of 23 Democratic AGs and four cities have filed an unopposed motion to intervene in support of the EPA’s Greenhouse Gas Emissions Standards for Heavy-Duty Vehicles—Phase 3 final rule (Final Rule), which adopted standards less stringent than proposed in early model years but reach equivalent or greater stringency in the final regulated years.…

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25 Republican AGs have petitioned the U.S. Court of Appeals for the D.C. Circuit to review the EPA’s rule entitled “Multi-Pollutant Emissions Standards for Model Years 2027 and Later Light-Duty and Medium-Duty Vehicles,” which sets emissions standards for passenger cars, trucks, and vans, model years 2027-2032. The AGs argue that the EPA has exceeded its authority and the Standards are arbitrary and capricious.

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