Costello v. United States

Opinion summary

Etalia.ai summary of the majority opinion

The Supreme Court case addressed the issue of whether a grand jury indictment based solely on hearsay evidence is valid. Frank Costello was indicted for tax evasion, and he challenged the indictment arguing that it was based entirely on hearsay testimony from government agents rather than direct evidence. The Court held that an indictment by a grand jury does not require the same level of scrutiny as trial proceedings and can be based on hearsay or other forms of indirect evidence. The decision emphasized that requiring only competent evidence would complicate and delay the process unnecessarily, undermining the function of grand juries to determine probable cause efficiently.