15 pages. "The question presented in this case is whether the 'as of' language sets the measurement date as the deadline by which actuaries must select the assumptions that underlie the withdrawal-liability calculation. The Court of Appeals for the D. C. Circuit held that it does not, concluding that actuaries may select their assumptions after the measurement date. We agree. The statute governing the selection and use of actuarial assumptions in the withdrawal-liability context contains no requirement that actuaries use assumptions adopted prior to the measurement date." [M&K Employee Solutions, LLC v. Trustees of the IAM National Pension Fund, No. 23-1209 (S. Ct. May 21, 2026)]  MORE >>