Final answer:
Rule 5(a) of the Federal Rules of Criminal Procedure is connected to the McNabb v. United States case because it encapsulates the principle established by the Supreme Court, requiring timely arraignment to prevent rights violations.
Step-by-step explanation:
Rule 5(a) refers to Federal Rule of Criminal Procedure 5(a), which mandates that law enforcement present an arrested individual before a magistrate judge without unnecessary delay. This rule has a historical connection to the McNabb v. United States case of 1943, wherein the Supreme Court ruled that confessions obtained during prolonged detention without a timely arraignment are inadmissible as evidence. This is because such detention violated a federal statute requiring prompt arraignment. The McNabb case fundamentally shaped the development of Rule 5(a), as it highlighted the importance of protecting the rights of individuals who have been arrested. The rule and the case are closely related in that they both focus on preventing law enforcement from obtaining evidence through methods that violate an individual’s right to due process.