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Melendez-Diaz v. Massachusetts, 557 U.S. 305 (2009), [1] is a United States Supreme Court case in which the Court held that it was a violation of the Sixth Amendment right of confrontation for a prosecutor to submit a chemical drug test report without the testimony of the person who performed the test. [2]
The Court modified the Hawkins rule so 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. Court membership; Chief Justice Warren E. Burger Associate Justices William J. Brennan Jr. · Potter Stewart Byron White · Thurgood Marshall
Diaz was convicted and sentenced to seven years in prison. On appeal to the United States Court of Appeals for the Ninth Circuit, the Court rejected petitioner's argument that Agent Flood's testimony violated rule 704(b). The Court ruled that Flood's statements did not constitute an "explicit opinion" on the defendant's state of mind. [4]
Davis v. Washington, 547 U.S. 813 (2006), was a case decided by the Supreme Court of the United States and written by Justice Antonin Scalia that established the test used to determine whether a hearsay statement is "testimonial" for Confrontation Clause purposes.
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.
In the instant case, the Court held that a trial judge could hold the "presumption" that a new witnesses' testimony is perjured due to "a pattern of discovery violations". [24] The pattern in Taylor's case was a series of two amendments to the witness list done in bad faith. [ 25 ] "
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.
Branzburg v. Hayes, 408 U.S. 665 (1972), was a landmark decision of the US Supreme Court invalidating the use of the First Amendment as a defense for reporters summoned to testify before a grand jury. The case was argued February 23, 1972, and decided June 29 of the same year. [1] The reporters lost their case by a vote of 5–4.