What court case addresses impeachment in legal proceedings?

The case of Giglio v. United States directly addresses the issue of impeachment in legal proceedings. In this case, the Supreme Court established that the prosecution is required to disclose any evidence that could be used to impeach the credibility of a witness, including any agreements made with witnesses or promises of leniency in exchange for testimony. This ruling emphasizes the importance of fair trial rights and ensures that the defense has access to information that could undermine the reliability of testimonies presented against a defendant. This obligation is crucial to avoid the risk of wrongful convictions and uphold the integrity of the judicial process.

In contrast, the other cases mentioned focus on different legal principles. Brady v. Maryland deals primarily with the prosecution's obligation to disclose exculpatory evidence to a defendant. Canton v. Harris relates to issues of municipal liability for inadequate training of police officers. Miranda v. Arizona is well-known for establishing the requirement for informing suspects of their rights during custodial interrogations. Each of these cases highlights important aspects of due process but does not specifically address the impeachment of witness credibility in the same way that Giglio does.