A grand jury is a jury—a group of citizens—empowered by law to conduct legal proceedings, investigate potential criminal conduct, and determine whether criminal charges should be brought. A grand jury may subpoena physical evidence or a person to testify. A grand jury is separate from the courts, which do not preside over its functioning.
Exculpatory evidence is evidence favorable to the defendant in a criminal trial that exonerates or tends to exonerate the defendant of guilt. It is the opposite of inculpatory evidence, which tends to present guilt.
The Supreme Court of the United States handed down sixteen per curiam opinions during its 2005 term, which lasted from October 3, 2005, until October 1, 2006.
United States v. Hubbell, 530 U.S. 27 (2000), was a United States Supreme Court case involving Webster Hubbell, who had been indicted on various tax-related charges, and mail and wire fraud charges, based on documents that the government had subpoenaed from him. The Fifth Amendment provides that no person “shall be compelled in any criminal case to be a witness against himself.” The Supreme Court has, since 1976, applied the so-called “act-of-production doctrine.” Under this doctrine, a person can invoke his Fifth Amendment rights against the production of documents only where the very act of producing the documents is incriminating in itself.
The Barry Bonds perjury case was a case of alleged perjury regarding use of anabolic steroids by former San Francisco Giants outfielder and all-time Major League Baseball career home run leader, Barry Bonds, and the related investigations surrounding these accusations. On April 13, 2011, Bonds was convicted of one felony count of obstruction of justice for giving an incomplete answer to a question in grand jury testimony. A mistrial was declared on the remaining three counts of perjury, and those charges were dropped. The obstruction of justice conviction was upheld by an appellate panel in 2013, but a larger panel of the appellate court overturned the conviction in 2015.
United States v. Felix, 503 U.S. 378 (1992), was a decision by the United States Supreme Court, which held that "a[n]…offense and a conspiracy to commit that offense are not the same offense for double jeopardy purposes." The Supreme Court rejected the Tenth Circuit's reversal of Felix's conviction, finding that the Court of Appeals read the holding in Grady v. Corbin (1990) too broadly.
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.
A citizen’s right to a trial by jury is a central feature of the United States Constitution. It is considered a fundamental principle of the American legal system.
Giglio v. United States, 405 U.S. 150 (1972), is a United States Supreme Court case in which the Court held that the prosecution's failure to inform the jury that a witness had been promised not to be prosecuted in exchange for his testimony was a failure to fulfill the duty to present all material evidence to the jury, and constituted a violation of due process, requiring a new trial. This is the case even if the failure to disclose was a matter of negligence and not intent. The case extended the Court's holding in Brady v. Maryland, requiring such agreements to be disclosed to defense counsel. As a result of this case, the term Giglio material is sometimes used to refer to any information pertaining to deals that witnesses in a criminal case may have entered into with the government.
Connick v. Thompson, 563 U.S. 51 (2011), is a United States Supreme Court case in which the Court considered whether a prosecutor's office can be held liable for a single Brady violation by one of its members on the theory that the office provided inadequate training.
Vasquez v. Hillery, 474 U.S. 254 (1986), is a United States Supreme Court case, which held that a defendant's conviction must be reversed if members of their race were systematically excluded from the grand jury that indicted them, even if they were convicted following an otherwise fair trial.
The United States Constitution contains several provisions regarding the law of criminal procedure.
Grand juries in the United States are groups of citizens empowered by United States federal or state law to conduct legal proceedings, chiefly investigating potential criminal conduct and determining whether criminal charges should be brought. The grand jury originated under the law of England and spread through colonization to other jurisdictions as part of the common law. Today, however, the United States is one of only two jurisdictions, along with Liberia, that continues to use the grand jury to screen criminal indictments.
Glasser v. United States, 315 U.S. 60 (1942), was a landmark decision of the US Supreme Court on two issues of constitutional criminal procedure. Glasser was the first Supreme Court decision to hold that the Assistance of Counsel Clause of the Sixth Amendment required the reversal of a criminal defendant's conviction if his lawyer's representation of him was limited by a conflict of interest.
Taylor v. Illinois, 484 U.S. 400 (1988), is a United States Supreme Court decision in which the Court held that defense witnesses can be prevented from testifying under certain circumstances, even if that hurts the defense's case. Taylor was the first case to hold that there is no absolute bar to blocking the testimony of a surprise witness, even if that is an essential witness for the defendant, a limitation of the broad right to present a defense recognized in Washington v. Texas (1967).
Robert P. McCulloch is an American former prosecutor who was the American Prosecuting Attorney for St. Louis County, Missouri, a post he held from 1991 until 2019. A Democrat, he historically had bipartisan support as a prosecutor and won re-election in 1994, 1998, 2002, 2006, 2010 and 2014, often unopposed, but by wide margins when he had an opponent. McCulloch held the highest paid position within St. Louis County government with an annual salary of $160,000. In 2018, he lost his bid for re-election in the Democratic primary to reformist challenger Wesley Bell by a 13.24% margin.
Bell v. Cone, 535 U.S. 685 (2002), was a Supreme Court of the United States case that upheld a death sentence despite the defendant's argument that he should not be sentenced to death because he was suffering from drug-induced psychosis when he committed the crimes. Cone also argued that he was denied effective assistance of counsel because his attorney failed to present sufficient mitigating evidence during the sentencing phase of his trial and that his attorney inappropriately waived his final argument during the sentencing phase. In an 8–1 opinion written by Chief Justice William Rehnquist, the United States Supreme Court denied Cone's petition for a writ of habeas corpus. The Court held that the actions taken by Cone's attorney during the sentencing phase were "tactical decisions" and that the state courts that denied Cone's appeals did not unreasonably apply clearly established law. Justice John Paul Stevens wrote a dissenting opinion in which he argued that Cone was denied effective assistance of counsel because his attorney failed to "subject the prosecution's case to meaningful adversarial testing."
Cone v. Bell, 556 U.S. 449 (2009), was a case in which the United States Supreme Court held that a defendant was entitled to a hearing to determine whether prosecutors in his 1982 death penalty trial violated his right to due process by withholding exculpatory evidence. The defendant, Gary Cone, filed a petition for postconviction relief from a 1982 death sentence in which he argued that prosecutors violated his rights to due process under the Fourteenth Amendment by withholding police reports and witness statements that potentially could have shown that his drug addiction affected his behavior. In an opinion written by Justice John Paul Stevens, the Supreme Court held that Cone was entitled to a hearing to determine whether the prosecution's failure to disclose exculpatory evidence violated Cone's right to due process; the Court noted that "the quantity and the quality of the suppressed evidence lends support to Cone’s position at trial that he habitually used excessive amounts of drugs, that his addiction affected his behavior during his crime spree". In 2016, Gary Cone died from natural causes while still sitting on Tennessee's death row.
Napue v. Illinois, 360 U.S. 264 (1959), was a United States Supreme Court case in which the Court held that the knowing use of false testimony by a prosecutor in a criminal case violates the Due Process Clause of the Fourteenth Amendment to the United States Constitution, even if the testimony affects only the credibility of the witness and does not directly relate to the innocence or guilt of the defendant.
United States v. Bagley, 473 U.S. 667 (1985), was a Supreme Court of the United States case that established the standard for materiality under Brady v. Maryland.
