hearing (Selective Service Act § 6(j))

the word 'hearing'—when put in the context of the whole scheme for review set forth in § 6(j)—[does not] comprehend the formal and litigious procedures which respondents' interpretation would attribute to it. Instead, the word takes its meaning in this instance from an analysis of the precise function which Congress has imposed upon the Department of Justice in § 6(j). … the standards of procedure to which the Department must adhere are simply standards which will enable it to discharge its duty to forward sound advice, as expeditiously as possible, to the appeal board.

Defined by the Supreme Court in - United States v. Nugent, 346 U.S. 1 (1953).