On May 26, 2022, the U.S. Supreme Court held that the Biden administration may keep using its social cost of carbon estimate. As we reported in February, a Louisiana district court issued an injunction that barred use of the Biden administration's cost estimations.  That decision was appealed to the Fifth Circuit Court of Appeals in March, where the injunction was stayed.  The case was then appealed to the U.S. Supreme Court, which sided with the Biden administration, without explanation or any noted dissent.  The U.S. Supreme Court decision will allow the Executive Branch to move ahead with using the cost figure in rulemakings and other decisions while the case plays out in the Fifth Circuit.