In the United States v. Nugent case of 1952, the Supreme Court ruled on issues related to military conscription and conscientious objection. The defendant, Nugent, had been denied Conscientious Objector status by his local draft board and appealed this decision all the way up to the Supreme Court. He argued that he should be exempt from military service due to his religious beliefs which opposed war in any form. However, after reviewing evidence including a personal letter written by Nugent expressing willingness for non-combatant service and statements made during an FBI investigation suggesting insincerity about his objections, the court upheld previous rulings denying him CO status. The majority opinion held that there was a basis in fact for denial of CO classification because it is not unconstitutional for draft boards or courts to evaluate sincerity based on objective evidence rather than solely relying on subjective claims of belief.

In the dissenting opinion for United States v. Nugent, Justice William O. Douglas argued that the majority's decision was a departure from established legal principles regarding conscientious objectors and their right to due process under law. He contended that Nugent had been denied his constitutional rights because he was not given an opportunity to rebut or explain evidence used against him by the Appeal Board in denying his claim as a conscientious objector. According to Justice Douglas, this denial of due process violated both statutory requirements and fundamental fairness standards set out in previous Supreme Court rulings on similar cases. Furthermore, he believed that it is essential for individuals claiming conscientious objector status to be able to present their case fully before any final decisions are made about their claims.