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Constitutional Challenges California

Alston & Bird

Change is in the Air for Greenhouse Gas Vehicle Emissions Standards

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Our Environment, Land Use & Natural Resources Group examines recent federal actions that may reshape federal greenhouse gas (GHG) vehicle emissions standards as well as California’s and other states’ authority to set and...more

Best Best & Krieger LLP

The Price of Water Just Got More Complicated: San Diego’s Legal Battle Over Tiered Rates

On July 30, 2025, a divided California Court of Appeal issued its long-awaited opinion in Patz v. City of San Diego, affirming the trial court’s judgment that the City’s tiered residential water rates violated Proposition 218...more

Snell & Wilmer

Ninth Circuit Strikes Down California’s One-Gun-a-Month Law

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In Nguyen v. Bonta, the Ninth Circuit Court of Appeals addressed the constitutionality of California’s “one-gun-a-month” law, which prohibits purchasing more than one firearm within a 30-day period. The Court affirmed the...more

Troutman Pepper Locke

California AG Faces Legal Challenge Over Hiring Outside Counsel in Climate Lawsuit

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California Attorney General (AG) Rob Bonta faces a legal challenge from a union representing state-employed attorneys over his decision to hire an outside law firm for a high-profile climate lawsuit against major oil...more

Franczek P.C.

Federal Appellate Court Finds that School Board President Violated First Amendment in Restricting Followers on Social Media

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The U.S. Court of Appeals for the Ninth Circuit, which governs federal districts in the West/Northwest, recently held that a California school board member violated the First Amendment when blocking users’ ability to access...more

Hahn Loeser & Parks LLP

U.S. Northern District of California Grants Limited Preliminary Injunction of DEI-Related Executive Orders

On June 9, 2025, the U.S. District Court for the Northern District of California issued a preliminary injunction in San Francisco A.I.D.S. Foundation, et. al. v. Trump, 25-cv-01824-JST (N.D. Cal.), enjoining three of the nine...more

Morgan Lewis

Los Angeles ‘Mansion Tax’ Update Regarding Office of Finance Assessments

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Taxpayer disputes involving Los Angeles’s Measure ULA, the Homelessness and Housing Solutions Tax—commonly referred to as the “mansion tax”—are progressing through the city’s administrative review process. Property owners...more

Allen Matkins

Challenging the Industrial Exodus: Legal Lessons from Santa Ana’s Planning Reboot

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The City of Santa Ana (City) has recently undertaken an ambitious — and highly controversial — effort to reshape the landscape of its historically industrial-centric Transit Zoning Code (TZC) district. Through the adoption of...more

Jenner & Block

California Vehicle Waiver: Congressional Review Act Showdown

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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

Seyfarth Shaw LLP

Trump Rescinds California’s Emission Waivers: What It Means for the Future of EV Mandates - Seyfarth's Future of Automotive Series

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On June 12, 2025, President Trump delivered on his promise to ease the aggressive push led by California and other states to mandate a transition to electric vehicles. At a White House signing ceremony, Trump signed three...more

Cozen O'Connor

Update on California's Climate Disclosure Laws: What Companies Need to Know

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On May 29, 2025, the California Air Resources Board (CARB) held a virtual public workshop to discuss forthcoming regulations implementing California’s corporate climate disclosure laws. The workshop focused on the scope of...more

Davis Wright Tremaine LLP

California Attempts To Catch a "Waive": State Leads 10 Others Suing Trump Administration Over Revocation of Vehicle Emission...

On June 12, President Trump signed three joint resolutions passed by Congress, ostensibly under the authority of the Congressional Review Act ("CRA"), to revoke three Clean Air Act waivers the Environmental Protection Agency...more

Sheppard Mullin Richter & Hampton LLP

Trial Court Strikes Down California’s Prop 65 Acrylamide Warning Requirements

A Federal District Court in California has ruled that Proposition 65 warning requirements for dietary acrylamide are unconstitutional. The California Chamber of Commerce (“CalChamber”) sued five years ago challenging the...more

Troutman Pepper Locke

Artificial Intelligence Industry Targeted for Independent Contractor Misclassification Lawsuits: May 2025 IC Legal News Update

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Five months ago, we reported about a class action lawsuit against an artificial intelligence (AI) company that engages workers to perform data labeling and content creation and classifies them as independent contractors (ICs)...more

DLA Piper

Federal Court Declares Proposition 65 Warnings for Acrylamide in Food Unconstitutional

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The US District Court for the Eastern District of California on May 2, 2025 granted summary judgment in favor of the California Chamber of Commerce, holding that Proposition 65 warning requirements for acrylamide in food...more

Foley Hoag LLP - State AG Insights

State Attorneys General Bring Lawsuit Against Executive Order on Energy Emergency

Following up on our previous posts on United States energy policy under the Trump Administration, we are writing with an update on recent State Attorney General (AG) action in response to the Trump Administration’s climate...more

Latham & Watkins LLP

Latest Developments in Fight Over California’s Climate Disclosure Laws

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A preliminary injunction motion is set for May, the judge issued a scheduling order, and CARB announced a public workshop to kick off a rulemaking to implement the laws....more

Greenberg Glusker LLP

Court Finds Requiring Prop. 65 Warnings for Acrylamide in Food is Unconstitutional

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On May 2, 2025, the U.S. District Court for the Eastern District of California issued a landmark ruling in California Chamber of Commerce v. Bonta, Case No. 2:19-cv-02019, holding that Proposition 65 (“Prop. 65”) warning...more

ArentFox Schiff

American Chemistry Council v. Bonta: A Decision in Support of Trade and Professional Associations’ First Amendment Rights

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Does the First Amendment protect associations’ communications with their members when petitioning government agencies?...more

King & Spalding

New Federal Court Decision Holds Proposition 65 Warnings Are Not Required Where There Was No Scientific Consensus on the...

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In an important decision under California’s Proposition 65, a federal court recently ruled that businesses cannot be required to provide a product warning under Proposition 65 where there is no scientific consensus on whether...more

Greenberg Glusker LLP

Judicial Burn: Court Declares Proposition 65 Acrylamide Warning Unconstitutional

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Acrylamide, a Proposition 65-listed substance that naturally forms in the cooking and heating of many plant-based foods, has been the focus of court action over the past six years. However, companies will no longer be...more

Allen Matkins

Renewable Energy Update 5.7.25

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Attorneys general from 17 states, including California, and Washington, D.C., are challenging an executive order President Donald Trump signed during his first day in office, pausing approvals, permits, and loans for all wind...more

Farella Braun + Martel LLP

District Court Issues Permanent Injunction Enjoining Enforcement of Prop 65 Warning Requirements for Dietary Acrylamide

On May 2, 2025, the Eastern District of California found that Prop 65 warning requirements for dietary acrylamide violate the First Amendment, and granted a permanent injunction enjoining enforcement of those warnings....more

Downey Brand LLP

Court Overturns Prop 65 Acrylamide Warning

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On May 2, a federal district court in Sacramento permanently enjoined the Prop 65 warning for acrylamide in food, finding it to be unconstitutional. At issue in the case, California Chamber of Commerce v. Bonta (E.D. Cal. No....more

Buchalter

California’s Proposed Vacancy Tax Bill Watered Down to Reporting Requirement

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A bill recently introduced in the California State Senate would have imposed a tax on commercial buildings that have prolonged vacancies, but has been rewritten after facing strong opposition. Authored by California State...more

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