The U.S. Supreme Court on Monday agreed to reconsider its landmark 1984 ruling in Chevron v. NRDC, which instructs courts to defer to a federal agencies’ reasonable interpretation of an ambiguous law.

The court granted certiorari, or review, in Loper Bright Enterprises v. Raimondo, a case dealing with the power of the National Marine Fisheries Service to force fishing vessels to pay the salaries of federal observers. The court did not explain its reasons for taking up the case, as is custom, but said it would limit its review to the second question presented by the petitioner.