The ink has barely dried on the U.S. Supreme Court’s Chevron-killing decision in Loper Bright Enterprises v. Raimondo, but San Francisco is already quoting from Chief Justice John Roberts Jr.’s opinion in a new high court appeal against the U.S. Environmental Protection Agency.

The Supreme Court held in Loper Bright last month that judges must not defer to federal agencies about the meaning of the law, overturning the 40-year-old Chevron deference doctrine that had given regulators a powerful advantage in thousands of rulemaking fights.