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Washington, the Supreme Court held that the Confrontation Clause bars “admission of testimonial statements of a witness who did not appear at trial unless he was unavailable to testify, and the defendant had had a prior opportunity for cross-examination.” [1] The Supreme Court declined to define "testimonial" in Crawford which left lower ...
Kastigar v. United States, 406 U.S. 441 (1972), was a United States Supreme Court decision that ruled on the issue of whether the government's grant of immunity from prosecution can compel a witness to testify over an assertion of the Fifth Amendment privilege against self-incrimination.
Trammel v. United States, 445 U.S. 40 (1980), is a United States Supreme Court case involving the spousal privilege and its application in the law of evidence. In it, the Court held that the witness-spouse alone has a privilege to refuse to testify adversely; the witness may be neither compelled to testify nor foreclosed from testifying.
In addition, grand jury witnesses may be prosecuted for perjury or making false statements in their testimony. In Kastigar v. United States, 406 U.S. 441 (1972), the US Supreme Court confronted the issue of the type of immunity, use or transactional, constitutionally required to compel testimony. The Court ruled that the grant of use and ...
Griffin v. California, 380 U.S. 609 (1965), was a United States Supreme Court case in which the Court ruled, by a 6–2 vote, that it is a violation of a defendant's Fifth Amendment rights for the prosecutor to comment to the jury on the defendant's declining to testify, or for the judge to instruct the jury that such silence is evidence of guilt.
The United States Supreme Court held that the use of the spouse's recorded statement made during police interrogation violated the defendant's Sixth Amendment right to be confronted with the witnesses against the defendant where the spouse, because of the state law marital privilege, did not testify at the trial and so was unavailable.
In eyewitness identification, in criminal law, evidence is received from a witness "who has actually seen an event and can so testify in court". [1]The Innocence Project states that "Eyewitness misidentification is the single greatest cause of wrongful convictions nationwide, playing a role in more than 75% of convictions overturned through DNA testing."
The responsibility to evaluate the credibility of eyewitness testimony falls on each individual juror, when such evidence is offered as testimony in a trial in the United States. [6] Research has shown that mock juries are often unable to distinguish between a false and accurate eyewitness testimony.