Supreme Court to Hear Landmark Climate Liability Case as Alito Recusal Threatens 4-4 Split

Key points

• The Supreme Court will hear oral arguments on October 5 in Suncor Energy v. Boulder, a case that could determine whether federal law preempts state-level climate damages claims against ExxonMobil and Suncor.
• The City and County of Boulder are seeking billions in damages for climate-related harms, alleging that the energy companies misled the public about the dangers of climate change.
• Justice Samuel Alito has recused himself from the case due to his stock holdings in energy companies, creating the possibility of a 4-4 split that would uphold the lower court’s decision without setting a national precedent.
• The Trump administration has sided with the oil companies, arguing that regulating climate pollution is inherently a federal issue under the Clean Air Act, while Boulder argues that the case is about local torts, not federal regulation.
• The case has significant implications for dozens of other climate-related lawsuits across the US, as well as broader tort law areas such as asbestos and pharmaceuticals.

Background

The case Suncor Energy v. Boulder has been a long-running dispute, with Boulder first suing the energy companies in 2018. The case has been closely watched due to its potential to set a precedent for state-level climate damages claims. The Trump administration has been actively involved in the case, submitting an unsolicited brief in 2025 urging the justices to rule in favor of Suncor and Exxon. The recusal of Justice Samuel Alito, who holds stock in energy companies, has added a layer of complexity to the case, as it could result in a 4-4 split that would uphold the lower court’s decision without setting a national precedent.

How outlets are covering it

AP News emphasizes the legal and constitutional aspects of the case, focusing on the arguments about federal preemption and the Clean Air Act. CNN highlights the role of Justice Clarence Thomas and his recent opinions that could influence the outcome, as well as the potential for a 4-4 split due to Alito’s recusal. Mother Jones focuses on the human impact of climate change, highlighting the stories of ranchers and other affected communities, and the broader implications of the case for tort law. The Trump administration and the oil companies argue that the case is about federal regulation, while Boulder and its supporters argue that it is about local torts and compensation for damages.

Why it matters

The outcome of Suncor Energy v. Boulder could have far-reaching consequences for climate change litigation and tort law in the US. A ruling in favor of the oil companies could preempt state-level climate damages claims, potentially ending dozens of similar lawsuits across the country. Conversely, a ruling in favor of Boulder could set a precedent for holding energy companies accountable for climate-related damages, potentially leading to significant financial liabilities for the industry. The case also has implications for other areas of tort law, such as asbestos and pharmaceuticals, as well as for the role of federal and state governments in regulating environmental issues.

What to watch

The Supreme Court is expected to issue a decision in the case sometime next year. If the court rules in favor of the oil companies, it could set a precedent that preempts state-level climate damages claims, potentially ending dozens of similar lawsuits across the country. If the court rules in favor of Boulder, it could set a precedent for holding energy companies accountable for climate-related damages, potentially leading to significant financial liabilities for the industry. The case could also be sent back to state courts if the court rules that it does not have jurisdiction to hear the case at this stage.