During a Supreme Court hearing on Suncor Energy v. County Commissioners of Boulder County, Justice Elena Kagan compared Boulder’s climate lawsuit against oil companies to the lawsuits filed against tobacco companies in the 1990s. The case focuses on whether Boulder’s lawsuit can proceed under state law or is preempted by federal regulations regarding air pollution and greenhouse gas emissions. Shanmugam, representing Suncor Energy, argued that both the Clean Air Act and constitutional principles preclude the lawsuit from going forward, but Kagan questioned why these cases should not be allowed to proceed similarly to how tobacco lawsuits were permitted decades ago.
Written locally by qwen2.5:14b on 2026-10-05,
using this article's own text rather than the other coverage of the
same event (that is the story summary below).
Story summary
When the Supreme Court begins its new term on Monday, it will consider Suncor Energy v. Boulder County, a landmark case that could determine if state and local governments can sue oil companies for climate change damages. In 2018, Boulder County sued Exxon Mobil and Suncor Energy, alleging their fossil fuel operations contributed to local climate-related harms. The suit argues the companies deceived the public about the dangers of greenhouse gas emissions through deceptive advertising and marketing.
If the Supreme Court allows these lawsuits to proceed, it could set a precedent for other states and municipalities across the country to file similar suits against energy firms, potentially leading to substantial financial liability for the industry. Conversely, if federal law preempts such state-level actions, manufacturers nationwide might face fewer climate-related legal challenges. The case is seen as significant not only for its environmental implications but also for its potential impact on broader issues of federalism and interstate commerce.
Written for “Supreme Court Climate Case” on 2026-10-06,
grounded in this article and the 32 other(s) covering the same event.
Why this leaning score
The article's own words the score was based on. Each is quoted
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Leaning: leans left for article 58428 (high confidence, 1 verified quote) · logged 2026-10-05
Justice Elena Kagan likened Boulder, Colorado’s lawsuits against oil companies for alleged climate change damages to the litany of lawsuits filed against “big tobacco” in the 1990s, as the Supreme Court considered Monday whether to allow Boulder’s landmark lawsuit to proceed.
asserted
lawsuit → liken → 1990s
The Supreme Court heard oral arguments in Suncor Energy v. County Commissioners of Boulder County over whether the lawsuit is preempted by federal law or not permissible under the Constitution, or if it can proceed to trial in state court.
asserted
it → hear → court
The case is expected to have sweeping ramifications for similar lawsuits that climate activists and Democrat-led jurisdictions have attempted to bring against oil companies, either broadly allowing them to continue or barring them as a matter of federal law.
asserted
them → expect → law
During Monday’s oral arguments, Kagan questioned Suncor’s lawyer, Kannon Shanmugam, over what prevents Boulder’s lawsuit from going forward, whereas major lawsuits against “big tobacco” and opioid makers were allowed to proceed on what she said were seemingly similar claims.
“In multiple respects, this suit appears to be based on the old 1990s tobacco suits that were brought by states and local governments, basically saying that big tobacco had made representations, misrepresentations, which had caused people to to overuse the product, causing harm to those governments,” Kagan said.
uncertain
Kagan → question → governments
“I suppose the opioid litigation more recently follows the same model.
asserted
litigation → suppose → model
So, if this is Chapter 3, were Chapters 1 and 2 also preempted?”
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Chapters → preempt → ?
Kagan added in her question to Shanmugam.
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Kagan → add → Shanmugam
Shanmugam rejected that Boulder’s lawsuit was similar to big tobacco lawsuits, saying it is not a new chapter but rather a “different book.”
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it → reject → lawsuits
The lawyer for Suncor highlighted differences between the two lawsuits, to which Kagan responded by claiming that she was “waiting to see the distinction,” noting that “this complaint talks a lot about misrepresentations” made by the oil companies.
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complaint → highlight → companies
Justice Brett Kavanaugh later followed up on Kagan’s question, asking why Shanmugam did not just assert that the Clean Air Act prevents states and counties from bringing forward lawsuits about air pollution, rather than attempting to make an additional constitutional argument.
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Act → follow → argument
“I thought the answer was that this Court has consistently said that air and water pollution are different in our federal enclaves,” Kavanaugh said.
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Kavanaugh → think → enclaves
“Why are you resisting that?”
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you → resist → that
Shanmugam had argued throughout the hearing that Boulder’s lawsuit should be dismissed both because the Clean Air Act gives the federal government jurisdiction over the regulation of greenhouse gas emissions and air pollution, and because the Constitution does not allow states to regulate matters beyond their borders.
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states → argue → borders
Shanmugam heavily emphasized the constitutional argument, leading to pushback from the justices who believed the Clean Air Act was likely the stronger argument.
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Act → emphasize → justices
“We don’t have to reinvent the wheel because we’ve said this multiple times, and Congress presumably, when doing the Clean Air Act and doing Clean Air Act amendments, has relied on this Court’s precedents establishing that this kind of pollution is a federal law matter unless Congress speaks otherwise,” Kavanaugh said.
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Kavanaugh → have → pollution
The high court appeared split on whether to allow Boulder’s lawsuit to move forward, but a majority appeared open to striking down the lawsuit as preempted by the Clean Air Act.
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majority → appear → Act
Because Justice Samuel Alito recused himself from the case, an eight-person bench will decide the case for the Supreme Court, leaving open the possibility of a rare 4-4 deadlock.
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bench → recuse → deadlock
The Suncor case was the first the Supreme Court heard in its new term, and the justices are expected to issue a ruling as soon as early 2027.
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justices → hear → 2027
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