Federal judge blocks DOJ bid to stop Hawaii from suing fossil fuel companies

Industry critics call climate lawsuits against fossil fuel companies frivolous, but courts have allowed most cases to proceed in state court despite decades of federal preemption defenses.

The industry and right-wing legal advocates consistently characterize climate lawsuits as frivolous and doomed to fail. ExxonMobil's lead litigation counsel told the Federalist Society in November 2025 that the company won't lose these cases and that courts need to reject them outright. Yet the record shows courts have actually rejected frivolous dismissals. The Second Circuit in City of New York v. Chevron did dismiss New York City's suit on preemption grounds, and federal judges in New Jersey and Delaware agreed. But state supreme courts in Hawaii and Colorado have ruled that climate tort claims can proceed. The Ninth Circuit also remanded cases back to state court, rejecting removal on preemption grounds. The turning point came when courts recognized a crucial distinction: you can't regulate emissions (that's federal), but you can sue for deception in marketing fossil fuels (that's state law). Hawaii's Supreme Court in City and County of Honolulu v. Sunoco LP held that tort claims for fraudulent marketing survive preemption challenges because they target corporate deception, not emissions regulation. Judge Gillmor embraced this reasoning when dismissing the DOJ suit. So while industry lawyers won't stop calling these cases frivolous, they're actually advancing through state courts, with over 30 active suits nationwide.

Sources

E&E News: Exxon lawyer vows to crush climate lawsuits (Nov 2025)

www.eenews.net

Connecticut v. ExxonMobil Corp. case summary

climateintegrity.org

State of California lawsuit

climateintegrity.org

Climate Accountability

www.ucsusa.org

Federal preemption doctrine creates an absolute shield for fossil fuel companies from state liability claims, preventing states from holding corporations accountable.

This is a common misconception promoted by industry defendants and sympathetic commentators. They argue that because the Clean Air Act is comprehensive federal regulation of emissions, states can't bring any tort claims touching on greenhouse gases. But courts don't agree that preemption is absolute or categorical. The key distinction—now established in multiple appellate decisions—is between regulating emissions (federal domain) and suing for deception in marketing products (state domain). The Third Circuit in Bell v. Cheswick Generating Station held that state tort law claims aren't preempted by the Clean Air Act because tort law is part of states' historic police powers, and courts apply a higher standard to preempt state common law than to preempt state statutes. The Hawaii Supreme Court's reasoning in Sunoco mirrors this: you can't use state law to set emissions standards, but you can use state nuisance, negligence, and consumer protection law to recover damages when companies deceived the public. Judge Gillmor explicitly adopted this distinction when she ruled that Hawaii's UDAP (Unfair or Deceptive Acts or Practices) claims target deception, not emissions regulation. The real battle isn't whether preemption doctrine exists—it does—but how narrowly courts will apply it. Industry rhetoric treats preemption as a blanket immunity shield; the actual law creates a narrower barrier.

Sources

CAA Preemption of Common Law Torts

pillsburylaw.com

Sixth Circuit and CAA Preemption

natlawreview.com

Liability for Public Deception

scholarship.law.columbia.edu

Climate Preemption

digitalcommons.pace.edu

Climate advocates argue that fossil fuel companies will finally be forced to pay for climate damages, but no climate lawsuit has yet resulted in a binding judgment or settlement requiring payment to government plaintiffs.

Climate advocates and state attorneys general pursuing these lawsuits frame them as historic accountability mechanisms that will force oil companies to pay billions for climate harms. Hawaii Attorney General Anne Lopez called it her duty to make fossil fuel companies 'pay their share.' But as of April 2026, no climate lawsuit against fossil fuel companies has produced a final judgment ordering payment to state or local government plaintiffs. Not a single one has gone to trial. What has happened: Marathon Oil paid $241.5 million to EPA in 2024 for Clean Air Act violations (separate from climate liability), New Jersey settled a contamination case with ExxonMobil for $225 million in 2015 (again, separate from climate damages), and some private individuals have won small verdicts in toxic tort cases. But the flagship climate deception suits—California, New York, Hawaii, Boulder, and others—remain in discovery or motion practice with no payment yet extracted. Industry observers note this isn't accidental: it's structural. Oil companies only need to win once to avoid paying; climate plaintiffs must win every single case to secure any money. The Supreme Court hasn't taken these cases up on the merits, leaving the legal theory unresolved.

Sources

Marathon Oil Settlement (2024)

www.epa.gov

ExxonMobil Settlement (2015)

www.njoag.gov

Why Climate Lawsuits Have Not Succeeded

www.rstreet.org

Lawsuits Database

climateintegrity.org

Multiple states suing fossil fuel companies will create a 'patchwork' of inconsistent state laws that fragments the national energy market and forces companies to comply with dozens of conflicting requirements.

This 'patchwork' argument is industry's primary federalism objection, and the DOJ hammers it repeatedly in the Hawaii complaint. The logic sounds plausible: if 20 states sue with different legal theories, won't oil companies face impossible compliance burdens? But the argument conflates two different legal mechanisms. State statutes that set conflicting emissions standards would create genuine patchwork problems—a company couldn't meet both California's 30% reduction target and Texas's 10% increase simultaneously. However, state tort lawsuits for fraudulent misrepresentation don't work that way. All state tort claims arise from state's fraud, negligence, and consumer protection law—doctrines that are already nationwide. ExxonMobil faces similar fraud liability exposure in New York, California, Colorado, Hawaii, and 20+ other jurisdictions regardless of climate litigation, because every state has deceptive practices law. Adding climate claims doesn't multiply conflicting obligations; it applies existing legal frameworks to a new subject matter. Moreover, companies can comply with one national disclosure standard and apply it everywhere. The real concern isn't fragmentation—it's liability exposure itself. The 'patchwork' rhetoric is shorthand for: we don't want any state suing us. As legal scholar Jonathan Adler noted, federalism doctrine doesn't prevent state court jurisdiction over tort claims unless they conflict with explicit federal law. Here, federal law doesn't mandate fossil fuel deception.

Sources

DOJ Hawaii Complaint (paras. 40, 62)

www.justice.gov

Obsolescent Preemption

texaslawreview.org

E&E News: Exxon Lawyer Vows to Crush Climate Lawsuits

www.eenews.net

The Trump administration argued in its Hawaii preemption suit that federal law must control energy policy nationwide, but the same DOJ previously defended state preemption of local climate action when it served federal interests.

The Trump DOJ's complaint against Hawaii argues strenuously that federal law occupies the entire field of energy and emissions regulation, and that states can't impose liability based on global greenhouse gas emissions because it conflicts with federal energy policy, foreign affairs, and interstate commerce. Attorney General Pam Bondi called climate lawsuits a threat to American energy independence. Yet this invokes a narrow, selective reading of federalism. The DOJ complaint itself notes that the Clean Air Act allows states to impose stricter emissions standards within their borders—a form of state preemption over local government power. States have long used 'climate preemption laws' (ironically named) to block cities from banning natural gas hookups or fossil fuel infrastructure. Blue states like Oregon and California have preempted local climate action when it didn't align with state energy priorities. More fundamentally, the Second Circuit's reasoning in City of New York v. Chevron—which the DOJ now relies on—was about federal displacement of federal common law, not state law claims. The preemption doctrine is genuinely unsettled, with Hawaii's Supreme Court reaching the opposite conclusion. So the DOJ's position isn't that federalism prevents state action; it's that federal energy policy should protect fossil fuel companies from state tort claims.

Sources

DOJ Hawaii Complaint (April 30, 2025)

www.justice.gov

Climate Preemption and Fossil Fuel Entrenchment

scholarship.law.columbia.edu

City of New York v. Chevron Corp., 993 F.3d 81 (2d Cir. 2021)

scholar.google.com

Judge dismisses DOJ suit

www.hawaiinewsnow.com

Judge Gillmor's dismissal of the DOJ suit means fossil fuel companies no longer face federal legal obstacles to state climate litigation advancing to trial.

Technically true, but with important caveats. Judge Gillmor dismissed the DOJ's preemption lawsuit with prejudice on standing grounds—meaning the federal government can't refile the same suit in federal court to preempt Hawaii's case. This eliminates a major federal-level barrier. The Supreme Court has also declined (twice in January 2025 and March 2025) to take up industry petitions seeking to overturn state court decisions allowing climate cases to proceed, which further clears federal obstacles. However, this doesn't mean fossil fuel companies are defenseless. They still raise preemption arguments inside state court proceedings, and some state courts (like New Jersey, Delaware, and Maryland) have dismissed climate cases on preemption grounds. The legal theory remains contested. Additionally, companies face other defenses: causation (proving their specific emissions caused Hawaii's specific harms), statute of limitations, political question doctrine, and constitutional limits on extraterritorial claims. Judge Gillmor also emphasized that her ruling was narrow—she didn't resolve the preemption question on the merits. She just said the federal government couldn't preemptively block Hawaii's lawsuit before Hawaii even filed. The real preemption battle happens in Hawaii state court.

Sources

Judge Dismisses Federal Suit

www.hawaiinewsnow.com

Supreme Court Rejects Industry Challenge

www.cnbc.com

Honolulu Star-Advertiser: Judge Rejects DOJ Bid

www.staradvertiser.com

Center for Climate Integrity

climateintegrity.org

The DOJ's lawsuit against Hawaii was motivated by genuine legal concerns about federal preemption, not by the Trump administration's desire to protect fossil fuel allies from liability.

The documentary evidence directly contradicts this claim. President Trump's Executive Order 14260 (April 8, 2025) explicitly directs the DOJ to stop state climate laws and litigation that burden domestic energy production. The order states that climate suits 'threaten American energy independence and our country's economic and national security.' Attorney General Pam Bondi's statement calling them 'frivolous' and 'ideologically motivated' echoes Trump campaign language from 2024 pledging to 'stop the wave of frivolous litigation from environmental extremists.' The timing is also telling: the DOJ sued Hawaii and Michigan just days before they filed their lawsuits (Hawaii on April 30, 2025, one day before filing suit). Legal scholar Michael Gerrard at Columbia called this 'an aggressive move in support of the fossil fuel industry,' and Judge Beckering in Michigan noted the unusual nature of preemptive suits before any claims were filed. Most substantively, the DOJ's standing argument fails because the government claimed hypothetical future harm—not concrete current injury. Federal courts normally reject such speculative standing claims. Yet the Trump DOJ pursued it anyway, signaling the priority was blocking state litigation, not resolving genuine constitutional questions. Even conservative legal scholars have criticized the aggressive tactics.

Sources

Executive Order 14260: Protecting American Energy

www.whitehouse.gov

DOJ Press Release (April 30, 2025)

www.justice.gov

Hawaii Moves Forward Despite Trump

www.hawaiipublicradio.org

Michigan Federal Court Rejects Trump Administration

www.jdsupra.com

Courts have consistently held that the Clean Air Act preempts state climate lawsuits, making it unlikely Hawaii's suit will survive to trial.

Courts have split sharply on this question, and the most recent trend favors Hawaii. The Second Circuit in City of New York v. Chevron (2021) held that climate tort claims were preempted—the one major decision industry cites repeatedly. But that decision has been heavily criticized for conflating federal common law (which the Supreme Court did displace via American Electric Power v. Connecticut) with state tort law (which operates under different preemption standards). Since then, courts have overwhelmingly rejected the blanket preemption theory. The Hawaii Supreme Court in Sunoco held that state tort claims weren't preempted. The Colorado Supreme Court in Boulder v. Suncor allowed state claims to proceed. The Ninth Circuit remanded multiple cases from federal to state court, rejecting removal based on preemption. Vermont's state court denied industry motions to dismiss. Even a federal judge in California (Judge Alsup) noted that the Clean Air Act doesn't address consumer deception claims. The only courts that have consistently dismissed on preemption grounds are New Jersey, Delaware, and Maryland—three outlier state courts applying a narrow reading. Judge Gillmor's ruling doesn't directly address preemption (she dismissed on standing grounds), but her reasoning implies skepticism of the blanket preemption position. She emphasized that Hawaii's claims target deception in marketing, not emissions regulation. That distinction—now widespread among appellate courts—suggests Hawaii's suit will likely survive preemption challenges in Hawaii state court.

Sources

City of New York v. Chevron Corp., 993 F.3d 81 (2d Cir. 2021)

scholar.google.com

Judge Dismisses Federal Suit

www.hawaiinewsnow.com

What's New in Climate Lawsuits

blog.ucsusa.org

Lawsuits Database

climateintegrity.org