Thurgood Marshall, Martin v. Occupational Safety and Health Review Commission…
“ Insofar as Congress did not invest the Commission with the power to make law or policy by other means, we cannot infer that Congress expected the Commission to use its adjudicatory power to play a policymaking role. Moreover, when a traditional, unitary agency uses adjudication to engage in lawmaking by regulatory interpretation, it necessarily interprets regulations that it has promulgated. ”
