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Greenhouse Gas Emissions State Attorneys General Environmental Policies

Cozen O'Connor

Democratic AGs Oppose Washing Away Appliance Efficiency Standards

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14 Democratic AGs and the Corporation Counsel for the City of New York submitted 16 comment letters to the U.S. Department of Energy (DOE) opposing the agency’s proposed rescission of water and energy efficiency standards for...more

Cozen O'Connor

Vermont’s Climate Superfund Law Draws Heated Challenge from GOP AGs

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A group of 24 Republican AGs, along with several trade associations, sued Vermont over the state’s Climate Superfund Act, which authorizes the state to levy billions of dollars in fines on fossil fuel companies for alleged...more

Morgan Lewis

Executive Order Seeks to Limit State Role in Energy Regulation

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The US administration issued the executive order “Protecting American Energy from State Overreach” on April 8, 2025, directing the US Attorney General to identify and challenge state- and local-level energy and climate...more

Troutman Pepper Locke

22 AGs Challenge New York’s Climate Superfund Law

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A coalition of industry associations and 22 state attorneys general (AG), led by West Virginia AG JB McCuskey, filed a lawsuit against the State of New York in the U.S. District Court for the Northern District of New York...more

Mintz

Red State AGs Sue New York State in Challenge to Climate Change Superfund Act

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In December 2024, the State of New York enacted the “Climate Change Superfund Act,” which would impose retroactive fines on fossil fuel producers for greenhouse gas emissions that contribute to climate change. (New York was...more

Cozen O'Connor

Minnesota’s Win Turns Up the Heat in Climate Change Litigation

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Minnesota AG Keith Ellison has obtained an order denying in large part motions to dismiss filed by defendants ExxonMobil Corp., the American Petroleum Institute, Koch Industries, Inc., Flint Hills Resources LP, and Flint...more

Cozen O'Connor

New York Climate Superfund Law Faces Heated Opposition from Republican AGs

Cozen O'Connor on

A group of 22 Republican AGs, along with several coal, oil, and gas companies and industry trade associations, sued New York over the state’s Climate Superfund Act, which authorizes the state to levy billions of dollars in...more

Cozen O'Connor

The State AG Report – 02.06.2025

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Here are curated AG and federal regulatory news stories highlighting key areas in which state and federal regulators’ decisions are having an impact across the US: •NCAA Agrees to Stop Imposing Name, Image, & Likeness...more

Cozen O'Connor

Fuel Efficiency Rule Recharged by Democratic AG Support

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A group of 15 Democratic AGs filed an amicus brief with the U.S. Court of Appeals for the Sixth Circuit in support of the National Highway Traffic Safety Administration (NHTSA) and its defense of its final rule setting...more

Cozen O'Connor

Republican AGs Want to Vaporize EPA Rule Imposing Methane Charges

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A group of 23 Republican AGs filed a petition for review in the U.S. Court of Appeals for the D.C. Circuit of the EPA’s Final Rule requiring charges on certain oil and gas producers exceeding Congressional methane emissions...more

Mintz - Energy & Sustainability Viewpoints

Energy & Sustainability Litigation Updates — January 2025

Regulatory Updates - There have been a couple of noteworthy developments in recent weeks concerning the mandatory climate disclosure regime enacted by California. These developments relate to SB 253 and SB 261, which...more

Troutman Pepper Locke

California Spearheads Multistate Effort to Defend EPA’s Stringent Emissions Standards for Heavy-Duty Vehicles

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California Attorney General (AG) Rob Bonta is leading a coalition of 22 Democratic states and the District of Columbia, to defend the Environmental Protection Agency’s (EPA) rule that sets stringent greenhouse gas emissions...more

Mitchell, Williams, Selig, Gates & Woodyard,...

NSPS for Greenhouse Gas Emissions from New, Modified, and Reconstructed Fossil Fuel-Fired Electric Generating Units/Clean Air Act:...

Arkansas Attorney General Tim Griffin and 24 other state Attorney Generals filed on May 9th a Petition for Review (“Petition”) in the United States Court of Appeals for the District of Columbia challenging the recent rule...more

Holland & Knight LLP

Next Steps Announced in Massachusetts Department of Public Utilities Proceeding To Evaluate Natural Gas Distribution Industry...

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As the Commonwealth of Massachusetts awaits Gov. Charlie Baker's decision whether to sign the revised landmark climate bill on his desk, the investigation by the Massachusetts Department of Public Utilities (DPU) (Docket DPU...more

Allen Matkins

California Environmental Law & Policy Update - March 2021 #3

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Deb Haaland confirmed as first Native American Cabinet secretary - NPR – March 15 - Deb Haaland, a member of New Mexico's Laguna Pueblo, has become the first Native American Cabinet secretary in U.S. history. The...more

Allen Matkins

California Environmental Law & Policy Update - November 2020

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U.S. formally exits Paris Climate Agreement - Bullet Associated Press – November 4 - The United States this Wednesday formally left the Paris Climate Agreement, a global pact it helped forge five years ago during the...more

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