The Sixth Amendment to the United States Constitution sets forth rights related to criminal prosecutions. It was ratified in 1791 as part of the United States Bill of Rights. The Supreme Court has applied most of the protections of this amendment to the states through the Due Process Clause of the Fourteenth Amendment.
In United States criminal law, probable cause is the standard by which police authorities have reason to obtain a warrant for the arrest of a suspected criminal or the issuing of a search warrant. It is also the standard by which grand juries issue criminal indictments. The principle behind the standard is to limit the power of authorities to perform random or abusive searches, and to promote lawful evidence gathering and procedural form during criminal arrest and prosecution. The standard also applies to personal or property searches.
Imprisonment in law is the specific state of being physically incarcerated or confined in an institutional setting such as a prison. Courts of the United States, including the U.S. Supreme Court, have recognized that the minimum period in an indeterminate sentence that was actually imposed by a court of law is the official term of imprisonment. In other words, any "street time" that was ordered by the court as part of the defendant's punishment does not constitute term of imprisonment.
In United States constitutional law, a Due Process Clause is found in both the Fifth and Fourteenth Amendments to the United States Constitution, which prohibits arbitrary deprivation of life, liberty, or property by the government except as authorized by law.
Goldberg v. Kelly, 397 U.S. 254 (1970), is a case in which the Supreme Court of the United States ruled that the Due Process Clause of the Fourteenth Amendment to the United States Constitution requires an evidentiary hearing before a recipient of certain government welfare benefits can be deprived of such benefits.
In the United States, the exclusionary rule is a legal rule, based on constitutional law, that prevents evidence collected or analyzed in violation of the defendant's constitutional rights from being used in a court of law. This may be considered an example of a prophylactic rule formulated by the judiciary in order to protect a constitutional right. The exclusionary rule may also, in some circumstances at least, be considered to follow directly from the constitutional language, such as the Fifth Amendment's command that no person "shall be compelled in any criminal case to be a witness against himself" and that no person "shall be deprived of life, liberty or property without due process of law."
Oregon v. Guzek, 546 U.S. 517 (2006), was a decision by the Supreme Court of the United States, which ruled that the Eighth Amendment to the United States Constitution does not grant criminal defendants facing the death penalty the right to introduce new evidence of their innocence during sentencing that was not introduced during trial. Accordingly, states could constitutionally exclude such evidence from the sentencing phase of a capital trial.
Samson v. California, 547 U.S. 843 (2006), is a United States Supreme Court case in which the Court affirmed the decision of the California Court of Appeal; which held that suspicionless searches of parolees are lawful under California law and that the search in this case was reasonable under the Fourth Amendment to the United States Constitution because it was not arbitrary, capricious, or harassing.
Massiah v. United States, 377 U.S. 201 (1964), was a case in which the Supreme Court of the United States held that the Sixth Amendment to the United States Constitution prohibits the government from eliciting statements from the defendant about themselves after the point that the Sixth Amendment right to counsel attaches.
Greenholtz v. Inmates of the Nebraska Penal and Correctional Complex, 442 U.S. 1 (1979), was a United States Supreme Court case in which the Court held that when state law requires the state to grant parole whenever a prisoner satisfies certain conditions, due process requires the state to allow the prisoner to present evidence in support of his request for parole and to furnish a written explanation of the reasons why his request has been denied.
Board of Regents of State Colleges v. Roth, 408 U.S. 564 (1972), was a case decided by the United States Supreme Court concerning alleged discrimination against a nontenured teacher at Wisconsin State University-Oshkosh.
Gagnon v. Scarpelli, 411 U.S. 778 (1973), was the second substantive ruling by the United States Supreme Court regarding the rights of individuals in violation of a probation or parole sentence.
Wiggins v. Smith, 539 U.S. 510 (2003), is a case in which the United States Supreme Court spelled out standards for "effectiveness" in the constitutional right to legal counsel guaranteed by the Sixth Amendment. Previously the court had determined that the Sixth Amendment included the right to "effective assistance" of legal counsel, but it did not specify what constitutes "effective", thus leaving the standards for effectiveness vague. In Wiggins v. Smith, the court set forth the American Bar Association Guidelines for the Appointment and Performance of Defense Counsel in Death Penalty Cases Guideline 11.8.6.(1989), as a specific guideline by which to measure effectiveness and competence of legal counsel.
Ohio v. Roberts, 448 U.S. 56 (1980), is a United States Supreme Court decision dealing with the Confrontation Clause of the Sixth Amendment to the United States Constitution.
Whorton v. Bockting, 549 U.S. 406 (2007), was a United States Supreme Court case about the application of the Confrontation Clause and whether Crawford v. Washington (2006) applied retroactively. Justice Samuel Alito, writing for a unanimous Court, ruled that Crawford did not apply retroactively.
The Double Jeopardy Clause of the Fifth Amendment to the United States Constitution provides: "[N]or shall any person be subject for the same offence to be twice put in jeopardy of life or limb..." The four essential protections included are prohibitions against, for the same offense:
Marsy's Law, the California Victims' Bill of Rights Act of 2008, enacted by voters as Proposition 9 through the initiative process in the November 2008 general election, is an amendment to the state's constitution and certain penal code sections. The act protects and expands the legal rights of victims of crime to include 17 rights in the judicial process, including the right to legal standing, protection from the defendant, notification of all court proceedings, and restitution, as well as granting parole boards far greater powers to deny inmates parole. Passage of this law in California has led to the passage of similar laws in Florida, Georgia, Illinois, Kentucky, Nevada, North Carolina, Oklahoma, Ohio and Wisconsin, and efforts to pass similar laws in Hawaii, Iowa, Montana, Idaho, South Dakota, and Pennsylvania. In November 2017, Marsy's Law was found to be unconstitutional and void in its entirety by the Supreme Court of Montana for violating that state's procedure for amending the Montana Constitution.
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.
Wolff v. McDonnell, 418 U.S. 539 (1974), was a United States Supreme Court case in which the Court held that prisoners retained some due process rights when incarcerated. In particular, the Court ruled that due process required that prison disciplinary decisions to revoke good-time credits must be accompanied by notification of the inmate, administrative hearings, the chance to call witnesses and present evidence, and a written statement detailing the nature of the offense committed and the evidence for said offense.
United States v. Haymond, 588 U.S. ___ (2019), is a case in which the U.S. Supreme Court struck down 18 U.S.C. § 3583(k)'s five-year mandatory minimum prison sentence for certain sex offenses committed by federal supervised releasees as unconstitutional unless the charges are proven to a jury beyond a reasonable doubt. Justices Ginsburg, Sotomayor, and Kagan joined Gorsuch's plurality opinion, while Breyer provided the necessary fifth vote with his narrow concurrence that began by saying he agreed with much of Justice Alito's dissent, which was joined by Justices Roberts, Thomas, and Kavanaugh.
