In the 1952 case of Rosenberg et al. v. United States, Julius and Ethel Rosenberg were convicted for conspiracy to commit espionage by passing atomic bomb secrets to the Soviet Union during World War II. The Rosenbergs appealed their conviction on several grounds including that they were not tried in a fair venue due to extensive pretrial publicity, that there was insufficient evidence against them, and that their death sentences constituted cruel and unusual punishment under the Eighth Amendment. However, the Supreme Court upheld both their convictions and sentences with Justice Felix Frankfurter abstaining from voting on whether or not capital punishment was appropriate in this case because he believed it should be decided by Congress rather than courts. This marked one of few instances where civilians were executed for espionage-related activities in U.S history.

In the dissenting opinion for Rosenberg et al. v. United States, Justice William O. Douglas argued that the death penalty was too severe a punishment for espionage in peacetime and should be reserved only for times of war when such acts could directly lead to loss of life or significant harm to national security. He also contended that there were procedural errors during trial which violated due process rights, including the judge's instruction to jury members about their role in determining sentencing - an issue he believed should have been left solely with them rather than influenced by judicial guidance. Furthermore, he expressed concern over potential bias from pre-trial publicity and its impact on ensuring a fair trial.