News & Analysis as of

Climate Change Clean Air Act California

Morrison & Foerster LLP

Federal Court Declines to Enjoin California Climate Disclosure Laws

On August 13, 2025, the U.S. District Court for the Central District of California declined to enjoin California’s two major climate disclosure bills, the Climate Corporate Data Accountability Act (SB 253) and the...more

Allen Matkins

California Environmental Law & Policy Update 8.1.25

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The U.S. Environmental Protection Agency (EPA) on July 29 proposed to repeal its landmark finding that greenhouse gas emissions endanger public health. The EPA’s so-called endangerment finding, issued in 2009, is a formal...more

Jenner & Block

California Vehicle Waiver: Congressional Review Act Showdown

Jenner & Block on

The Congressional Review Act (“CRA”), enacted in 1996, allows Congress to disapprove federal regulations promulgated by government agencies within 60 legislative working days after the rule is submitted to Congress. In order...more

Allen Matkins

California Environmental Law & Policy Update 6.13.25

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The U.S. Environmental Protection Agency (EPA) moved this Wednesday to erase limits on greenhouse gases from power plants and to weaken restrictions on other hazardous power plant emissions, including mercury, arsenic, and...more

Morrison & Foerster LLP

Advanced Clean Fleets Regulations No Longer in Force for Most Fleet Operators and Owners

In the face of the Trump administration’s hostility toward California’s Clean Air Act waivers in general, CARB withdrew its request to EPA for a waiver for the Advanced Clean Fleets (ACF) regulation on January 13, 2025....more

Allen Matkins

California Environmental Law & Policy Update 1.31.25

Allen Matkins on

The Trump administration has asked the U.S. Supreme Court to pause its review of a case involving California’s stricter vehicle emissions and electric vehicle standards. Acting Solicitor General Sarah Harris filed the request...more

Allen Matkins

California Environmental Law & Policy Update 1.17.25

Allen Matkins on

On Monday, January 13, 2025, California withdrew requests for Clean Air Act waivers from the U.S. Environmental Protection Agency (EPA) needed to support four recently adopted vehicle emissions regulations: 1) the Advanced...more

Blank Rome LLP

SCOTUS Declines to Review California’s Clean Air Act Preemption Waiver—Current Implications and Expected Response from the...

Blank Rome LLP on

Update and Background - The U.S. Supreme Court, in Diamond Alternative Energy, LLC v. EPA, et al, recently declined to review whether the Environmental Protection Agency (“EPA”) exceeded its authority by granting a...more

Proskauer Rose LLP

California Climate Disclosure Laws – New Developments, Old Timelines

Proskauer Rose LLP on

California Climate Disclosure Laws – New Developments, Old Timelines - The California legislature recently rejected Governor Gavin Newsom’s proposal to delay the deadlines to comply with California’s climate disclosure...more

Goldberg Segalla

Appeals Court Rules Californi-missions Standards Can Stay High

Goldberg Segalla on

It all started in the early 40’s, when the smog was so bad in California that visibility was measured in city blocks, and people suffered from nausea, stinging eyes, and difficulty breathing. By the 50’s, the California...more

Foley Hoag LLP - Energy & Climate Counsel

What Companies and Investors Need to Know about California Assembly Bill 1305, The Voluntary Market Disclosures Business...

On October 7, 2023, California Governor Gavin Newsom signed Assembly Bill 1305 into law, also known as the “Voluntary Market Disclosures Business Regulation Act,” or AB 1305. This law marks the first of its kind in the...more

Quarles & Brady LLP

California’s New Climate Disclosure and GHG-Related Claims Laws

Quarles & Brady LLP on

On October 7, 2023, Governor Gavin Newsom signed into law a trio of climate-related bills that will impact what companies doing business in California must (or can) say about their greenhouse gas (GHG) emissions and the...more

Mayer Brown

Lawsuit Challenges Recent California Climate Disclosure Laws

Mayer Brown on

As discussed in our earlier Client Alerts, California recently passed several laws requiring certain climate-related corporate disclosures, including, for example, regarding emissions and climate-related financial risk. As...more

Sheppard Mullin Richter & Hampton LLP

California Climate Change Legislation, Policy and Regulation – 2023 in Review

As we enter 2024, we once again review the most significant legislation, policy changes and regulatory actions with respect to climate change taken by California in the past year. In contrast to 2022, which brought a revamp...more

Allen Matkins

California Environmental Law & Policy Update 12.15.23

Allen Matkins on

A group of 18 California children – ranging in ages from 8 to 17 – has filed a new constitutional climate case in U.S. District Court in the Central District of California against the U.S. Environmental Protection Agency...more

Procopio, Cory, Hargreaves & Savitch LLP

Unpacking California's 2024 Zero Emission Fleet Mandate

Should state and local governments be concerned about California’s 2024 mandate to purchase zero emission fleet vehicles given that many of those vehicles do not yet exist? Procopio's John Lormon and Matt Abbot address...more

Foley Hoag LLP - Energy & Climate Counsel

The Battle Over California’s Authority to Set Vehicle Emission Standards Continues

EPA, States, and the auto industry are again ratcheting up the battle over California’s authority to set vehicle GHG and Zero Emission Vehicles program. The Clean Air Act generally prohibits a state from adopting its own...more

Foley Hoag LLP - Environmental Law

EPA Restores the California Advanced Clean Car Program; GHG Emissions From Transportation Will Continue For Some Time

EPA has now formally restored its waiver under § 209(b) of the Clean Air Act that allows California’s greenhouse gas emissions standards and Zero Emission Vehicle mandate, notwithstanding the preemption of state vehicle...more

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