Podcast - Diamond Alternative Energy, LLC v. EPA: The Intersection of Constitutional and Environmental Law
SCOTUS Clean Air Act Cases: What’s New?
Unpacking California's 2024 Zero Emission Fleet Mandate
West Virginia vs. EPA Part II: U.S. Supreme Court Applies the Major Questions Doctrine to limit EPA Regulatory Authority
[Webinar] Growing Greener: Navigating Environmental Laws in the Cannabis Industry
Nota Bene Episode 101: Catching up with Global Climate Regulation with Nico van Aelstyn
Schoenbrod: SCOTUS Ruling Helps EPA Deal With a "Stupid Statute"
Law Prof: The Clean Air Act Needs a Reboot
Key Takeaways - What Happened? On July 29, 2025, the U.S. Environmental Protection Agency (EPA) published a proposed rule to rescind the 2009 Greenhouse Gas (GHG) Endangerment Finding (“Endangerment and Cause or Contribute...more
The U.S. Environmental Protection Agency (EPA) has proposed a major shift in regulatory policy—to rescind the agency’s 2009 “Endangerment Finding” and to repeal all resulting emission standards for new motor vehicles and...more
The U.S. Environmental Protection Agency ("EPA") proposes rescission of the 2009 Endangerment Finding, which underpins greenhouse gas regulation under the Clean Air Act....more
On Monday, January 13, 2025, California withdrew requests for Clean Air Act waivers from the EPA needed to support four recently adopted vehicle emissions regulations: 1) the Advanced Clean Fleets Regulations; 2) the In-Use...more
In Ohio et al. v. U.S. EPA, on April 9, 2024, the United States Court of Appeals for the D.C. Circuit upheld a decision by the U.S. Environmental Protection Agency ("EPA") to allow California's 2013 greenhouse gas emissions...more
California Attorney General (AG) Rob Bonta and the California Air Resources Board (the Board) have reached a $46 million agreement with engine manufacturer Cummins Inc. to settle alleged violations of California’s engine...more
On April 12, 2023, the Environmental Protection Agency (EPA) issued the notice of proposed rulemaking for “Multi-Pollutant Emission Standards for Model Years 2027 and Later Light-Duty and Medium-Duty Vehicles” (the “proposed...more
On December 20, 2022, the Environmental Protection Agency finalized regulations aimed at reducing harmful emissions from trucks, delivery vehicles, and buses. These regulations will impact vehicles manufactured after 2027 and...more
On May 12, seventeen states filed a petition for review of EPA’s decision to reinstate California’s authority to set its own motor vehicle emissions standards. The petition was filed in the U.S. Court of Appeals for the D.C....more
Ohio, along with sixteen other states, sued the Environmental Protection Agency on Friday last week, over its March 14, 2022 decision to reinstate a waiver allowing the nation’s most populous state California, under its...more
This report helps automotive suppliers inform their legal and operational decisions to help address challenges and opportunities. Key Developments - Foley & Lardner’s 9th annual Automotive White Paper examines in...more
EPA recently finalized rules under the Clean Air Act (CAA) establishing federal greenhouse gas (GHG) emissions standards for passenger cars and light trucks for Model Years (MY) 2023 through 2026. The standards are designed...more
On August 5, 2021, the Environmental Protection Agency (EPA) issued a Notice of Proposed Rulemaking (NPRM) to revise the federal greenhouse gas (GHG) emissions in model years (MY) 2022-2026. In coordination with the...more
Several years into EPA’s mobile source enforcement initiative, the agency recently issued an updated enforcement policy addressing vehicle and engine tampering and aftermarket defeat devices (the “Tampering Policy”). The...more
The U.S. Environmental Protection Agency (EPA) recently released a long-awaited update to its enforcement policy on vehicle and engine tampering and aftermarket parts....more
On March 31, 2020, the Environmental Protection Agency (EPA) and the Department of Transportation, acting through the National Highway Traffic Safety Administration (NHTSA), finalized a rulemaking that the agencies described...more
On 31 March 2020, the U.S. Environmental Protection Agency (EPA) and the Department of Transportation National Highway Traffic Safety Administration (NHTSA) released a new joint rule finalizing the Trump administration's fuel...more
Action May Have Far-Reaching Impacts - Today, the Environmental Protection Agency (“EPA”) and the National Highway Traffic Safety Administration (“NHTSA”) announced a joint rule intended to substantially affect...more
Yesterday President Trump announced on Twitter that the U.S. was revoking California’s waiver under the Clean Air Act (CAA) which allowed it to impose stricter tailpipe emission standards than the federal ones. California’s...more
On August 7, Continental AG, one of the world’s largest automotive parts manufacturers, announced that it would cut investment in hydraulic components, such as injectors and high-pressure pumps, to focus on electrified drive...more
As President Trump’s nominee to head the Environmental Protection Agency, Andrew Wheeler, cleared a key committee vote this week, a conflict between EPA and the State of California over tailpipe greenhouse gas emissions shows...more
On Thursday, August 2, 2018, the U.S. Department of Transportation’s National Highway Traffic Safety Administration (NHTSA) and the U.S. Environmental Protection Agency (EPA) jointly proposed a rule to freeze the fuel...more
Irony abounds as the new Acting Administrator at EPA last Tuesday announced historic progress under the Clean Air Act even while the Administration works to roll back a number of Clean Air Act rules. ...more
The National Highway Traffic Safety Administration (NHTSA) and the U.S. Environmental Protection Agency (EPA) issued a joint notice of proposed rulemaking today, called the "Safer Affordable Fuel-Efficient (SAFE) Vehicles...more
Many Americans listened last week to the admissions by the now former President of Volkswagen that the company had been “dishonest” and had cheated on the U.S. emissions tests. How was this happening at the world’s #1...more