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Greenhouse Gas Emissions State Attorneys General

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

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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

Cozen O'Connor

The State AG Report – 10.24.2024

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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: •AG Task Force Issues Warning over Illegal Robocalls - ...more

Cozen O'Connor

GOP AGs Accelerate Challenge to EPA’s Heavy-Duty Vehicle Emissions Standards Rule

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A group of 24 Republican AGs have filed a brief challenging the EPA’s Greenhouse Gas Emissions Standards for Heavy-Duty Vehicles—Phase 3 final rule (Final Rule), which sets standards to reduce greenhouse gas emissions from...more

Cozen O'Connor

California Files Amicus Brief Defending SEC Climate Disclosure Rule

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California AG Rob Bonta has filed an amicus brief with the U.S. Court of Appeals for the Eighth Circuit in defense of the SEC’s climate disclosure rules (Final Rule), which requires publicly traded companies to disclose...more

Morrison & Foerster LLP

MoFo’s State + Local Government Enforcement Newsletter - August 2024

Morrison Foerster’s State and Local Government Task Force is pleased to provide our bimonthly newsletter summarizing some of the most important and interesting developments from state attorneys general across the country and...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

Cozen O'Connor

Democratic AGs Expand Emissions Standards Fight to Heavy-Duty Vehicles

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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...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

Mintz

NY AG Launches Greenwashing Lawsuit Against Beef Producer

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Recently, the New York Attorney General filed a lawsuit against the American subsidiaries of JBS Group, the Brazilian-based beef producer, asserting that JBS had “violat[ed] New York's consumer protection statutes” through...more

Cozen O'Connor

Republican AGs Ask Court to Stay Rule Limiting Methane Emissions

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A group of 24 Republican AGs and Arizona legislative leaders have filed a motion to stay the EPA’s final rule on Standards of Performance for New, Reconstructed, and Modified Sources and Emissions Guidelines for Existing...more

Cozen O'Connor

Democratic AGs Rally in Support of EPA's Methane Rule Against GOP Challenge

Cozen O'Connor on

A coalition of 20 Democratic AGs filed a motion to intervene in defense of the EPA’s Oil and Gas Methane Rule in a lawsuit filed by 25 Republican AGs who challenge the rule. In their motion, the Democratic AGs assert that the...more

Cozen O'Connor

Republican AGs Challenge SEC’s Climate Disclosure Rule

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A coalition of nine Republican AGs, led by Iowa AG Brenna Bird, has filed a petition for judicial review of the SEC’s climate related disclosure rule, which would require companies to disclose their greenhouse gas emissions....more

Troutman Pepper Locke

New York AG Sues Top Beef Producer for Alleged False “Net-Zero” Claims and Deceptive Trade Practices

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New York Attorney General (AG) Letitia James is suing JBS USA Food Company and JBS USA Food Company Holdings under New York’s consumer protection laws for allegedly attempting to boost consumer sales by making sustainability...more

Womble Bond Dickinson

New York Attorney General Sues JBS for its Climate Claims

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New York State Attorney General Letitia James has filed a lawsuit against beef producer JBS in state court. The allegations center around JBS’s allegedly misleading marketing claims related to its commitment to reduce climate...more

Troutman Pepper Locke

Tennessee-Led Coalition of 22 State AGs Sends Warning Letter to Financial Service Providers Committed to “Net-Zero” Emissions

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On September 13, Tennessee Attorney General (AG) Jonathan Skrmetti sent a letter to members of the Net Zero Financial Service Providers Alliance (NZFSPA) warning that their commitment to support “global net zero greenhouse...more

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