For decades, the phrase “waters of the United States” (WOTUS) has dictated whether a wetland, stream, or pond falls within federal jurisdiction under the Clean Water Act (CWA). Two years and a change in administration later, EPA and the U.S. Army Corps of Engineers have returned with a new proposal…
On November 18, 2025, the U.S. Court of Appeals for the Ninth Circuit issued an injunction temporarily halting the implementation of California’s SB 261, the Climate-Related Financial Risk Act, just weeks before the law’s first mandated disclosures on January 1, 2026. The court declined to stay California’s companion climate emissions…
On November 12, 2025, the U.S. Environmental Protection Agency (EPA) approved Texas’s request for primacy over Class VI underground injection control (UIC) wells under the Safe Drinking Water Act, authorizing the Railroad Commission of Texas (RRC) to issue and oversee permits for carbon capture and storage (CCS) injection projects. The…
The California Air Resources Board (CARB) released a preliminary list of companies it believes may be subject to the state’s new climate disclosure regime, which imposes significant disclosure duties on large United States entities “doing business in California”—even if the business they do in California is not itself large. CARB’s…
Coalitions of Republican-led states, industry associations led by the U.S. Chamber of Commerce, and, most recently, the U.S. Department of Justice are testing “climate superfund” laws that aim to recover billions from carbon majors for climate adaptation costs. Recent rulings in lawsuits challenging the New York and Vermont statutes have…
This post reviews the U.S. Supreme Court’s significant regulatory and administrative law decisions from the Court’s 2024 Term and previews cases on the docket for Fall 2025. While the term produced no true “blockbusters,” the Court displayed particular concern with how lower federal courts have been applying the National Environmental…
On June 9, 2025, the U.S. Environmental Protection Agency (EPA) proposed granting the State of Texas primary enforcement authority—commonly referred to as “primacy”—over the permitting and regulation of Class VI underground injection control (UIC) wells under the Safe Drinking Water Act (SDWA). This would authorize the Texas Railroad Commission (RRC)…
In a closely watched opinion issued on May 16, 2025, the Texas Supreme Court in Myers-Woodward, LLC v. Undergrounds Services Markham, LLC, — S.W.3d —, No. 22-0878, 2025 WL 1415892 (Tex. May 16, 2025) resolved a long-uncertain issue of subsurface property rights in the context of salt dome mining. The…
THE U.S. SUPREME COURT City and County of San Francisco v. EPA (March 4, 2025) In the first major environmental decision by the Court in the 2024 Term, the Court’s analysis of the Clean Water Act concluded that there was no provision in the Act supporting the imposition by EPA…
Even as the Trump administration moves to block state and local climate liability efforts, states and municipalities continue to advance lawsuits seeking to hold fossil fuel companies liable for harms associated with climate change. Most recently, the State of Hawaii initiated a climate deception lawsuit, and the City of Charleston,…