Felix Frankfurter,
United States v. Morgan (313 U.S. 409…
“ We are in the legislative realm of fixing rates. This is a task of striking a balance and reaching a judgment on factors beset with doubts and difficulties, uncertainty and speculation. On ultimate analysis the real question is whether the Secretary or a court should make an appraisal of elements having delusive certainty. Congress has put the responsibility on the Secretary and the Constitution does not deny the assignment. ”
