The Supreme Court kicked off its new term Monday with a major showdown over who gets to hold energy companies accountable for climate change. At the center of the debate: should lawsuits from local and state governments be heard in state courts, or are these issues strictly a federal matter?

The core conflict

States and municipalities—like Boulder County, Colorado—are suing energy giants including ExxonMobil and Suncor. They claim these companies misled the public about climate change and should pay billions to cover the costs of wildfires, rising sea levels, and severe storm damage.

On the other side, the energy companies and the Trump administration are playing hardball. They argue that climate change is a global, national issue governed by the Clean Air Act. The government, represented by lawyer Sarah Harris, claims the lawsuits are a “power grab” that exceeds state authority.

The drama in the courtroom

Justice Samuel Alito sat this one out, recusing himself due to his oil stock holdings. That leaves an eight-justice bench, and the vibes are off for a clear ruling. If they split 4-4, the cases keep moving in state courts, which is exactly what the companies are trying to avoid.

Chief Justice John Roberts seemed open to letting state courts handle it, questioning why this situation is different from other multi-state litigation. However, Justice Brett Kavanaugh raised concerns that a win for the local governments could bankrupt companies and lead to decades of endless litigation. Justice Elena Kagan pushed back, comparing these suits to historical battles against Big Tobacco and opioid makers.

Why it matters

Real talk: this is a major test of federal power versus local control. If the court decides these cases stay in state courts, companies could face a wave of lawsuits across the country. If the court decides it's an "inherently federal" issue, these massive climate claims might get tossed for good. The court might even take an "exit ramp" and avoid a final ruling for now, letting the lower courts keep grinding away. Either way, the final decision will shift the legal landscape for every business in America.