Entrapment is a practice in which a law enforcement agent or an agent of the state induces a person to commit a crime that the person would have otherwise been unlikely or unwilling to commit. In US law, it is defined as "the conception and planning of an offense by an officer or agent, and the procurement of its commission by one who would not have perpetrated it except for the trickery, persuasion or fraud of the officer or state agent".
Malicious prosecution is a common law intentional tort. Like the tort of abuse of process, its elements include (1) intentionally instituting and pursuing a legal action that is (2) brought without probable cause and (3) dismissed in favor of the victim of the malicious prosecution. In some jurisdictions, the term "malicious prosecution" denotes the wrongful initiation of criminal proceedings, while the term "malicious use of process" denotes the wrongful initiation of civil proceedings.
A prosecutor is a legal representative of the prosecution in states with either the adversarial system, which is adopted in common law, or inquisitorial system, which is adopted in civil law. The prosecution is the legal party responsible for presenting the case in a criminal trial against the defendant, an individual accused of breaking the law. Typically, the prosecutor represents the state or the government in the case brought against the accused person.
Batson v. Kentucky, 476 U.S. 79 (1986), was a landmark decision of the United States Supreme Court ruling that a prosecutor's use of a peremptory challenge in a criminal case—the dismissal of jurors without stating a valid cause for doing so—may not be used to exclude jurors based solely on their race. The Court ruled that this practice violated the Equal Protection Clause of the Fourteenth Amendment. The case gave rise to the term Batson challenge, an objection to a peremptory challenge based on the standard established by the Supreme Court's decision in this case. Subsequent jurisprudence has resulted in the extension of Batson to civil cases and cases where jurors are excluded on the basis of sex.
In the legal system of the United States, a Brady disclosure consists of exculpatory or impeaching information and evidence that is material to the guilt or innocence or to the punishment of a defendant. The term comes from the 1963 U.S. Supreme Court case Brady v. Maryland, in which the Supreme Court ruled that suppression by the prosecution of evidence favorable to a defendant who has requested it violates due process.
Nolle prosequi, abbreviated nol or nolle pros, is legal Latin meaning "to be unwilling to pursue". It is a type of prosecutorial discretion in common law, used for prosecutors' declarations that they are voluntarily ending a criminal case before trial or before a verdict is rendered; it is a kind of motion to dismiss and contrasts with an involuntary dismissal.
McCleskey v. Kemp, 481 U.S. 279 (1987), is a United States Supreme Court case, in which the death sentence 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 mitigate a death penalty determination without showing a "racially discriminatory purpose." McCleskey has been described as the "most far-reaching post-Gregg challenge to capital sentencing."
Hartman v. Moore, 547 U.S. 250 (2006), is a decision by the Supreme Court of the United States involving the pleading standard for retaliatory prosecution claims against government officials. After a successful lobbying attempt by the CEO of a manufacturing company against competing devices that the US Postal Service supported, the CEO found himself the target of an investigation by US postal inspectors and a criminal prosecution that was dismissed for lack of evidence. The CEO then filed suit against the inspectors and other government officials for seeking to prosecute him in retaliation for exercising his First Amendment rights to criticize postal policy. The Court ruled 5-2 that to prove that the prosecution was caused by a retaliatory motive, the plaintiff bringing such a claim must allege and prove that the criminal charges were brought without probable cause.
Heath v. Alabama, 474 U.S. 82 (1985), is a case in which the United States Supreme Court ruled that, because of the doctrine of "dual sovereignty", the double jeopardy clause of the Fifth Amendment to the Constitution does not prohibit one state from prosecuting and punishing somebody for an act of which they had already been convicted of and sentenced for in another state.
Oyler v. Boles, 368 U.S. 448 (1962), was a case heard by the Supreme Court of the United States.
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.
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:
In United States law, absolute immunity is a type of sovereign immunity for government officials that confers complete immunity from criminal prosecution and suits for damages, so long as officials are acting within the scope of their duties. The Supreme Court of the United States has consistently held that government officials deserve some type of immunity from lawsuits for damages, and that the common law recognized this immunity. The Court reasons that this immunity is necessary to protect public officials from excessive interference with their responsibilities and from "potentially disabling threats of liability."
In common law, the principle of prosecutorial discretion allows public prosecutors a wide latitude to decide whether or not to charge a person for a crime, and which charges to file. A similar principle in continental law countries is called the principle of opportunity.
The United States Constitution contains several provisions regarding the law of criminal procedure.
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.
Flowers v. Mississippi, No. 17–9572, 588 U.S. 284 (2019), is a United States Supreme Court decision regarding the use of peremptory challenges to remove black jurors during a series of Mississippi criminal trials for Curtis Flowers, a black man convicted on murder charges. The Supreme Court held in Batson v. Kentucky that the use of peremptory challenges solely on the basis of race is unconstitutional. This case examined whether the Mississippi Supreme Court erred in how it applied Batson to this case. The Supreme Court ruled that Flowers' case fell under Batson and that the state inappropriately removed most of the potential black jurors during the trials.
United States v. Armstrong, 517 U.S. 456 (1996), was a case heard by the Supreme Court of the United States.
Powers v. Ohio, 499 U.S. 400 (1991), was a United States Supreme Court case that re-examined the Batson Challenge. Established by Batson v. Kentucky, 476 U.S. 79 (1986), the Batson Challenge prohibits jury selectors from using peremptory challenges on the basis of race, ethnicity, gender, and sex. Powers expanded the jurisdictions of this principle, allowing all parties within a case, defendants especially, to question preemptory challenges during a jury selection, regardless of race. This holding was protected under the Equal Protection Clause of the Fourteenth Amendment.
Fischer v. United States, 603 U.S. ___, was a United States Supreme Court case about the proper use of the felony charge of obstructing an official proceeding, established in the Sarbanes–Oxley Act, against participants in the January 6 United States Capitol attack. The Supreme Court ruled 6–3 in June of 2024 that the charge only applied when the defendant "impaired the availability or integrity" of a physical document or object used in an official proceeding.
