In common law jurisdictions, an acquittal certifies that the accused is free from the charge of an offense, as far as the criminal law is concerned. This is so even where the prosecution is simply abandoned by the prosecution. The finality of an acquittal is dependent on the jurisdiction. In some countries, such as the United States, an acquittal operates to bar the retrial of the accused for the same offense, even if new evidence surfaces that further implicates the accused. The effect of an acquittal on criminal proceedings is the same whether it results from a jury verdict or results from the operation of some other rule that discharges the accused. In other countries, the prosecuting authority may appeal an acquittal similar to how a defendant may appeal a conviction.
Capital punishment is a legal penalty in the United States, currently used by 30 states, the federal government, and the military. Its existence can be traced to the beginning of the American colonies. The United States is the only developed Western nation that applies the death penalty regularly. It is one of 54 countries worldwide applying it, and was the first to develop lethal injection as a method of execution, which has since been adopted by five other countries. The Philippines has since abolished executions, and Guatemala has done so for civil offenses, leaving the United States one of 4 countries to use this method, along with China, Thailand, and Vietnam.
Apprendi v. New Jersey, 530 U.S. 466 (2000), is a landmark United States Supreme Court decision with regard to aggravating factors in crimes. The Court ruled that the Sixth Amendment right to a jury trial, incorporated against the states through the Fourteenth Amendment, prohibited judges from enhancing criminal sentences beyond statutory maxima based on facts other than those decided by the jury beyond a reasonable doubt. The decision has been a cornerstone in the modern resurgence in jury trial rights. As Justice Scalia noted in his concurring opinion, the jury-trial right "has never been efficient; but it has always been free."
Gregg v. Georgia, Proffitt v. Florida, Jurek v. Texas, Woodson v. North Carolina, and Roberts v. Louisiana, 428 U.S. 153 (1976), reaffirmed the United States Supreme Court's acceptance of the use of the death penalty in the United States, upholding, in particular, the death sentence imposed on Troy Leon Gregg. Referred to by a leading scholar as the July 2 Cases and elsewhere referred to by the lead case Gregg, the Supreme Court set forth the two main features that capital sentencing procedures must employ in order to comply with the Eighth Amendment ban on "cruel and unusual punishments". The decision essentially ended the de facto moratorium on the death penalty imposed by the Court in its 1972 decision in Furman v. Georgia 408 U.S. 238 (1972).
Roper v. Simmons, 543 U.S. 551 (2005), was a landmark decision in which the Supreme Court of the United States held that it is unconstitutional to impose capital punishment for crimes committed while under the age of 18. The 5–4 decision overruled Stanford v. Kentucky, in which the court had upheld execution of offenders at or above age 16, and overturned statutes in 25 states.
A death-qualified jury is a jury in a criminal law case in the United States in which the death penalty is a prospective sentence. Such a jury will be composed of jurors who:
- Are not categorically opposed to the imposition of capital punishment;
- Are not of the belief that the death penalty must be imposed in all instances of capital murder—that is, they would consider life imprisonment as a possible penalty.
The People of the State of California v. Robert Page Anderson, 493 P.2d 880, 6 Cal. 3d 628, was a landmark case in the state of California that outlawed the use of capital punishment. It was subsequently overruled by a state constitutional amendment, called Proposition 17.
McCleskey v. Kemp, 481 U.S. 279 (1987), was a United States Supreme Court case, in which the death penalty sentencing of Warren McCleskey for armed robbery and murder was upheld. The Court said the "racially disproportionate impact" in the Georgia death penalty indicated by a comprehensive scientific study was not enough to overturn the guilty verdict without showing a "racially discriminatory purpose." McCleskey has been described as the “most far-reaching post-Gregg challenge to capital sentencing.”
Coker v. Georgia, 433 U.S. 584 (1977), held that the death penalty for rape of an adult woman was grossly disproportionate and excessive punishment, and therefore unconstitutional under the Eighth Amendment to the United States Constitution. A few states continued to have child rape statutes that authorized the death penalty. In Kennedy v. Louisiana (2008), the court expanded Coker, ruling that the death penalty is unconstitutional in all cases that do not involve murder or crimes against the State.
Walton v. Arizona, 497 U.S. 639 (1990), was a United States Supreme Court case that upheld two important aspects of the capital sentencing scheme in Arizona — judicial sentencing and the aggravating factor "especially heinous, cruel, or depraved" — as not unconstitutionally vague. The Court overruled the first of these holdings in Ring v. Arizona, 536 U.S. 584 (2002). The second of these holdings has yet to be overturned.
In criminal law, a mitigating factor, also known as extenuating circumstances, is any information or evidence presented to the court regarding the defendant or the circumstances of the crime that might result in reduced charges or a lesser sentence. Unlike a legal defense, it cannot lead to the acquittal of the defendant. The opposite of a mitigating factor is an aggravating factor.
Bigby v. Dretke 402 F.3d 551, the U.S. Court of Appeals for the Fifth Circuit heard a case appealed from the United States District Court for the Northern District of Texas on the issue of the instructions given to a jury in death penalty sentencing. The decision took into account the recent United States Supreme Court decisions concerning the relevance of mitigating evidence in sentencing, as in Penry v. Lynaugh.
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:
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.
Shafer v. South Carolina, 532 U.S. 36 (2001), was a United States Supreme Court case decided in 2001. The case concerned the ability of a defendant to tell the jury that, absent a penalty of death, a penalty of life imprisonment would not permit early release of a prisoner on parole. While the question had been decided in the case of Simmons v. South Carolina, this case dealt with the extent of the ruling.
The United States Constitution contains several provisions related to criminal sentencing.
Hurst v. Florida, 577 U.S. ___ (2016), was a United States Supreme Court case in which the Court, in an 8-1 ruling, applied the rule of Ring v. Arizona to the Florida capital sentencing scheme, holding that the Sixth Amendment requires a jury to find the aggravating factors necessary for imposing the death penalty. In Florida, under a 2013 statute, the jury made recommendations but the judge decided the facts.
