ESG Litigation & Enforcement Tracking

Litigation Tracking

The Litigation Tracking section provides a comprehensive overview of active ESG‑related litigation. This update highlights key trends and developments that help organizations stay informed and navigate the evolving ESG landscape.

2026 Litigation

California Sued over Vehicle Emission Regulations

March 12, 2026
United States of America v. California Air Resources Board, No. 2:26-at-00450 (E.D. Cal.).

The U.S. Justice and Transportation departments filed a complaint for declaratory and injunctive relief against the California Air Resources Board (CARB) for allegedly adopting and enforcing regulations for fuel economy standards for light-duty vehicles in violation of the Energy Policy Conservation Act and the U.S. Constitution. The plaintiffs assert that CARB’s CO2 standards for light-duty and zero-emissions vehicles are preempted under 49 U.S.C. § 32919(a) because they relate to fuel economy standards and therefore should be declared unlawful and unenforceable, and California should be permanently enjoined from enforcing them.

Plaintiffs Receive Attorneys’ Fees … and Nothing Else

February 11, 2026
Spence v. American Airlines Inc., No. 4:23-cv-00552 (N.D. Tex.).

A federal judge in Texas ruled that the plaintiffs were entitled to $4.6 million in attorneys’ fees in their suit arguing that American Airlines improperly allowed ESG factors to guide its employee retirement fund investment strategy—even though the judge did not award the plaintiffs any actual monetary damages. The judge determined in an early ruling that the best way for American Airlines to address its breach of fiduciary duty to its employees was to make changes to the plan’s management, rather than to award money damages to the individual class members. The judge awarded attorneys’ fees, however, given the weight of the duty of loyalty the airline breached and as an incentive to ensure future compliance with the federal benefits laws.

Texas SB 13 Struck Down as Unconstitutionally Vague

February 4, 2026
American Sustainable Business Council v. Hegar, No. 1:24-cv-01010 (W.D. Tex.).

A federal judge struck down a Texas law restricting public entities from investing with financial firms and businesses that “boycott” energy companies and the fossil fuel industry. Calling the law both “overbroad and unconstitutionally vague” in violation of the First and Fourteenth Amendments, the judge granted a motion for partial summary judgment for the plaintiff, a sustainability-focused business group, and prohibited the state from enforcing Senate Bill 13.