Politicians have nearly stopped talking about climate change, a recent analysis shows. They recognize that a bigger concern for Americans is the high cost of living. In the background, however, state lawsuits against energy companies that aim to drive up energy prices are proceeding full steam ahead through the court system.

One of these cases, SunCor Energy, et al. v. City of Boulder, is currently pending before the Supreme Court, awaiting a decision on whether to review it. It’s the latest of several that have sought cert in recent years, and it has the distinction of a rare unsolicited amicus brief from the U.S. government in support of review. This century, the court has granted cert in every case, when a quorum existed, in which one was filed.

The court should accept this case. The city of Boulder is effectively seeking to assert control over the nation’s energy policies by alleging state law claims for........

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