ADMINISTRATIVE PROCEEDINGS
With respect to action taken by administrative agencies the Court has held that the demands of due process do not require a hearing at the initial stage, or at any particular point in the proceeding so long as a hearing is held before the final order becomes effective.[111] In Bowles v. Willingham,[112] it sustained orders fixing maximum rents issued without a hearing at any stage, saying "* * * where Congress has provided for judicial review after the regulations or orders have been made effective it has all that due process under the war emergency requires."[113] But where, after consideration of charges brought against an employer by a complaining union, the National Labor Relations Board undertook to void an agreement between an employer and another independent union, the latter was entitled to notice and an opportunity to participate in the proceedings.[114] Although a taxpayer must be afforded a fair opportunity for hearing in connection with the collection of taxes,[115] collection by distraint of personal property is lawful if the taxpayer is allowed a hearing thereafter.[116]
"A FAIR HEARING"
When the Constitution requires a hearing it requires a fair one, held before a tribunal which at least meets currently prevailing standards of impartiality.[117] An opportunity must be given not only to present evidence, but also to know the claims of the opposing party and to meet them. Those who are brought into contest with the Government in a quasi-judicial proceeding aimed at control of their activities are entitled to be fairly advised of what the Government proposes and to be heard upon the proposal before the final command is issued.[118] But a variance between the charges and findings will not invalidate administrative proceedings where the record shows that at no time during the hearing was there any misunderstanding as to the basis of the complaint.[119] The mere admission of evidence which would be inadmissible in judicial proceedings does not vitiate the order of an administrative agency.[120] A provision that such a body shall not be controlled by rules of evidence does not, however, justify orders without a foundation in evidence having rational probative force. Mere uncorroborated hearsay does not constitute the substantial evidence requisite to support the findings of the agency.[121] While the Court has recognized that in some circumstances a "fair hearing" implies a right to oral argument,[122] it refuses to lay down a general rule that would cover all cases.[123] It says: "Certainly the Constitution does not require oral argument in all cases where only insubstantial or frivolous questions of law, or indeed even substantial ones, are raised. Equally certainly it has left wide discretion to Congress in creating the procedures to be followed in both administrative and judicial proceedings, as well as in their conjunction."[124]
JUDICIAL REVIEW
To the extent that constitutional rights are involved, due process of law imports a judicial review of the action of administrative or executive officers. This proposition is undisputed so far as questions of law are concerned, but the extent to which the courts should and will go in reviewing determinations of fact has been a highly controversial issue. In St. Joseph Stock Yards Co. v. United States,[125] the Supreme Court held that upon review of an order of the Secretary of Agriculture establishing maximum rates for services rendered by a stock yard company, due process required that the Court exercise its independent judgment upon the facts to determine whether the rates were confiscatory.[126] Subsequent cases sustaining rate orders of the Federal Power Commission have not dealt explicitly with this point.[127] The Court has said simply that a person assailing such an order "carries the heavy burden of making a convincing showing that it is invalid because it is unjust and unreasonable in its consequences."[128]