In the case of Culombe v. Connecticut, 1960, the U.S Supreme Court ruled in favor of Arthur Culombe who had been convicted for murder based on a confession he made while in police custody without legal representation. The court held that his confession was not voluntary and thus violated his Fifth Amendment rights against self-incrimination. The ruling emphasized that confessions must be voluntarily given to be admissible as evidence and underscored the importance of providing suspects with their constitutional rights during interrogations, including access to an attorney and protection from coercive police tactics. This decision significantly impacted law enforcement procedures across America by reinforcing standards for obtaining valid confessions.

In the dissenting opinion for Culombe v. Connecticut, Justice Frankfurter argued that the majority's decision was too broad and subjective in its interpretation of what constitutes coercion during police interrogations. He believed that there should be a more objective standard to determine whether or not a confession is voluntary, rather than relying on an individual judge's personal judgment about the psychological state of the defendant at the time of questioning. Furthermore, he disagreed with how much weight was given to factors such as length of detention and lack of counsel in determining voluntariness. Instead, he proposed focusing on whether law enforcement officials had acted improperly or used tactics designed to overcome a suspect’s willpower.