Shell plc v. City & County of Honolulu

Shell plc and two of its subsidiaries filed a separate petition for writ of certiorari. The petition presented two questions: (1) “Whether claims seeking damages for the effects of interstate and international emissions on the global climate are beyond the limits of state law and thus preempted under the federal Constitution,” and (2) “Whether the Clean Air Act preempts state-law claims predicated on damaging interstate emissions.”