A subpoena or witness summons is a writ issued by a government agency, most often a court, to compel testimony by a witness or production of evidence under a penalty for failure. There are two common types of subpoenas:
- subpoena ad testificandum orders a person to testify before the ordering authority or face punishment. The subpoena can also request the testimony to be given by phone or in person.
- subpoena duces tecum orders a person or organization to bring physical evidence before the ordering authority or face punishment. This is often used for requests to mail copies of documents to requesting party or directly to court.
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. The reporters lost their case by a vote of 5-4. This case is cited for the rule that in federal courts, a reporter may not generally avoid testifying in a criminal grand jury, and it remains the only case in which the U.S. Supreme Court has considered the use of reporters' privilege.
Crawford v. Washington, 541 U.S. 36 (2004), is a United States Supreme Court decision that reformulated the standard for determining when the admission of hearsay statements in criminal cases is permitted under the Confrontation Clause of the Sixth Amendment. The Court held that cross-examination is required to admit prior testimonial statements of witnesses who have since become unavailable.
Jaffee v. Redmond, 518 U.S. 1 (1996), was a United States Supreme Court case in which the Court created a psychotherapist-patient privilege in the Federal Rules of Evidence.
In the common law, spousal privilege is a term used in the law of evidence to describe two separate privileges that apply to spouses: the spousal communications privilege and the spousal testimonial privilege.
Clinton v. Jones, 520 U.S. 681 (1997), was a landmark United States Supreme Court case establishing that a sitting President of the United States has no immunity from civil law litigation, in federal court, against him or her, for acts done before taking office and unrelated to the office. In particular, there is no temporary immunity, so it is not required to delay all federal cases until the President leaves office.
The Confrontation Clause of the Sixth Amendment to the United States Constitution provides that "in all criminal prosecutions, the accused shall enjoy the right…to be confronted with the witnesses against him." Generally, the right is to have a face-to-face confrontation with witnesses who are offering testimonial evidence against the accused in the form of cross-examination during a trial. The Fourteenth Amendment makes the right to confrontation applicable to the states and not just the federal government. The right only applies to criminal prosecutions, not civil cases or other proceedings.
Davis v. Washington, 547 U.S. 813 (2006), was a case decided by the Supreme Court of the United States holding that hearsay statements made in a 911 call asking for aid were not "testimonial" in nature and thus their introduction at trial did not violate the Confrontation Clause as defined in Crawford v. Washington.
The Fifth Amendment to the United States Constitution addresses criminal procedure and other aspects of the Constitution. It was ratified, along with nine other articles, in 1791 as part of the Bill of Rights. The Fifth Amendment applies to every level of the government, including the federal, state, and local levels, in regard to a US citizen or resident of the US. The Supreme Court furthered the protections of this amendment through the Due Process Clause of the Fourteenth Amendment.
In the law of evidence, a privilege is a rule of evidence that allows the holder of the privilege to refuse to disclose information or provide evidence about a certain subject or to bar such evidence from being disclosed or used in a judicial or other proceeding.
Malloy v. Hogan, 378 U.S. 1 (1964), was a case in which the Supreme Court of the United States deemed defendants' Fifth Amendment privilege not to be compelled to be witnesses against themselves was applicable within state courts as well as federal courts, overruling the decision in Twining v. New Jersey (1908). The majority decision holds that the Fourteenth Amendment allows the federal government to enforce the first eight amendments on state governments.
Barefoot v. Estelle, 463 U.S. 880 (1983), is a United States Supreme Court case. The Court ruled on the admissibility of clinical opinions given by two psychiatrists hired by the prosecution in answer to hypothetical questions regarding the defendant's future dangerousness and the likelihood that he would present a continuing threat to society in this Texas death penalty case. The American Psychiatric Association submitted an amicus curiae brief in support of the defendant's position that such testimony should be inadmissible and urging curtailment of psychiatric testimony regarding future dangerousness and a prohibition of such testimony based on hypothetical data.
Mitchell v. United States, 526 U.S. 314 (1999), is a United States Supreme Court case that considered two Fifth Amendment privileges related to a criminal defendant’s rights against self-incrimination in a Federal District Court. The court ruled that a defendant who waives the guilty plea does not also waive the privilege during the sentencing phase of the trial, and that the court cannot draw an adverse inference from the defendant's silence when determining facts related to the crime which affect the severity of the sentence.
Gilbert v. California, 388 U.S. 263 (1967), was an important decision of the Supreme Court of the United States, which was argued February 15–16, 1967, and decided June 12, 1967.
Jencks v. United States, 353 U.S. 657 (1957), is a U.S. Supreme Court case.
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.
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.
Melendez-Diaz v. Massachusetts, 557 U.S. 305 (2009), 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. While the court ruled that the then-common practice of submitting these reports without testimony was unconstitutional, it also held that so called "notice-and-demand" statutes are constitutional. A state would not violate the Constitution through a "notice-and-demand" statute by both putting the defendant on notice that the prosecution would submit a chemical drug test report without the testimony of the scientist and also giving the defendant sufficient time to raise an objection.
Bullcoming v. New Mexico, 564 U.S. 647 (2011), is a significant 6th Amendment Confrontation Clause case decided by the United States Supreme Court. On June 23, 2011, the Supreme Court considered the issue whether a defendant's Confrontation Clause rights extend to a non-testifying laboratory analyst whose supervisor testifies as to test results that the analyst transcribed from a machine. In a five to four decision authored by Justice Ginsburg, the Court held that the second surrogate analyst could not testify about the testimonial statements in the forensic report of the certifying analyst under the Confrontation Clause.
Murphy v. Waterfront Commission of New York Harbor, 378 U.S. 52 (1964), was a United States Supreme Court case concerning the self-incrimination clause in the Fifth Amendment to the United States Constitution. The Court ruled that a state cannot compel a witness to provide testimony that may be incriminating under other State/Federal laws, even if it granted immunity under its own laws. Decided on the same day as Malloy v. Hogan (1964), the Supreme Court reconsidered its previous rulings that the Federal Government could compel witness testimony that could be incriminating under a state's laws, and states could similarly compel testimony that would be incriminating under Federal law.
