“ The very purpose of a hearing is to give registrants an opportunity to meet adverse evidence. It makes a mockery of that purpose to suggest that such adverse evidence can be effectively met if its provenance is unknown. Nor is it possible to be confident that a 'resume is fair' when one cannot know what it is a resume of. ”

“ The Selective Service Act is a comprehensive statute designed to provide orderly, efficient and fair procedure for marshalling available manpower of country and to impose a common obligation of military service on all physically fit young men ”

“ Each of the respondents claims to be a conscientious objector entitled to total exemption from military service. Each has been convicted of wilfully refusing to submit to induction in the armed forces of the United States. [7] At their trials, respondents challenged the validity of their selective service classifications, claiming that they were fixed without basis in fact [8] and without adherence to the procedures prescribed by § 6 (j) of the Act; [9] each claimed that the Department of Justice's failure to show him the FBI reports rendered his classification illegal. ”

“ Under Selective Service Act subsection entitling claimant denied classification as conscientious objector by local draft board to further review by an appropriate appeal board and requiring appeal board to refer claim to Department of Justice for inquiry and hearing, neither Department investigation nor its hearing is determinative, and it is not function of such auxiliary procedure to provide full scale trial for each appealing registrant ”

“ It is especially difficult when these procedures must be geared to meet the imperative needs of mobilization and national vigilance-when there is no time for 'litigious interruptions.' Falbo v. United States, 1949, 320 U.S. 549, 64 S.Ct. 346, 88 L.Ed. 305. Under the circumstances presented, we cannot hold that the statute, as we construe it, violates the Constitution. ”