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 the protections of this amendment to the states through the Due Process Clause of the Fourteenth Amendment.
Extradition is an action wherein one jurisdiction delivers a person accused or convicted of committing a crime in another jurisdiction, over to the other's law enforcement. It is a cooperative law enforcement procedure between the two jurisdictions and depends on the arrangements made between them. In addition to legal aspects of the process, extradition also involves the physical transfer of custody of the person being extradited to the legal authority of the requesting jurisdiction.
Forensic psychology involves the application of psychological knowledge and methods to help answer legal questions arising in civil or criminal proceedings. Historically, forensic psychology was defined narrowly as the application of clinical psychological knowledge to criminal cases or questions in criminal justice settings. Contemporary definitions of forensic psychology recognize that several subfields of psychology apply "the scientific, technical, or specialized knowledge of psychology to the law." While the American Psychological Association (APA) officially recognized forensic psychology as a specialty under the narrower definition in 2001, the Specialty Guidelines for Forensic Psychologists were revised in 2013 and now reference several psychology subdisciplines, such as social, clinical, experimental, counseling, and neuropsychology).
In United States and Canadian law, competence concerns the mental capacity of an individual to participate in legal proceedings or transactions, and the mental condition a person must have to be responsible for his or her decisions or acts. Competence is an attribute that is decision-specific. Depending on various factors which typically revolve around mental function integrity, an individual may or may not be competent to make a particular medical decision, a particular contractual agreement, to execute an effective deed to real property, or to execute a will having certain terms.
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Faretta v. California, 422 U.S. 806 (1975), was a case in which the Supreme Court of the United States held that criminal defendants have a constitutional right to refuse counsel and represent themselves in state criminal proceedings.
Panetti v. Quarterman, 551 U.S. 930 (2007), is a decision by the Supreme Court of the United States, ruling that criminal defendants sentenced to death may not be executed if they do not understand the reason for their imminent execution, and that once the state has set an execution date death-row inmates may litigate their competency to be executed in habeas corpus proceedings. This decision reaffirmed the Court's prior holdings in Ford v. Wainwright, and Stewart v. Martinez-Villareal.
Sell v. United States, 539 U.S. 166 (2003), is a decision in which the United States Supreme Court imposed stringent limits on the right of a lower court to order the forcible administration of antipsychotic medication to a criminal defendant who had been determined to be incompetent to stand trial for the sole purpose of making them competent and able to be tried. Specifically, the court held that lower courts could do so only under limited circumstances in which specified criteria had been met. In the case of Charles Sell, since the lower court had failed to determine that all the appropriate criteria for court-ordered forcible treatment had been met, the order to forcibly medicate the defendant was reversed.
In the United States criminal justice system, a competency evaluation is an assessment of the ability of a defendant to understand and rationally participate in a court process.
Dusky v. United States, 362 U.S. 402 (1960), was a landmark United States Supreme Court case in which the Court affirmed a defendant's right to have a competency evaluation before proceeding to trial. The Court outlined the basic standards for determining competency.
Jackson v. Indiana, 406 U.S. 715 (1972), was a landmark decision of the United States Supreme Court that determined a U.S. state violated due process by involuntarily committing a criminal defendant for an indefinite period of time solely on the basis of his permanent incompetency to stand trial on the charges filed against him.
Frendak v. United States, 408 A.2d 364 is a landmark case in which District of Columbia Court of Appeals decided that a judge could not impose an insanity defense over the defendant's objections.
Godinez v. Moran, 509 U.S. 389 (1993), was a landmark decision in which the U.S. Supreme Court ruled that if a defendant was competent to stand trial, they were automatically competent to plead guilty, and thereby waive the panoply of trial rights, including the right to counsel.
Drope v. Missouri, 420 U.S. 162 (1975), was a United States Supreme Court case in which the Court held a Missouri trial court deprived a defendant of due process by failing to order a competency examination after he was hospitalized following an attempted suicide and as a result missed a portion of his trial for a capital offense.
Cooper v. Oklahoma, 517 U.S. 348 (1996), was a United States Supreme Court case in which the Court reversed an Oklahoma court decision holding that a defendant is presumed to be competent to stand trial unless he proves otherwise by the second highest legal standard of proof, that of clear and convincing evidence, ruling that to be unconstitutional. The court said the defendant's Fourteenth Amendment rights to due process were violated.
Indiana v. Edwards, 554 U.S. 164 (2008), was a United States Supreme Court case in which the Court held that the standard for competency to stand trial was not linked to the standard for competency to represent oneself.
Trial as an adult is a situation in which a juvenile offender is tried as if they were an adult, whereby they may receive a longer or more serious sentence than would otherwise be possible if they were charged as a juvenile.
United States federal laws governing offenders with mental diseases or defects provide for the evaluation and handling of defendants who are suspected of having mental diseases or defects. The laws were completely revamped by the Insanity Defense Reform Act in the wake of the John Hinckley Jr. verdict.
The Assistance of Counsel Clause of the Sixth Amendment to the United States Constitution provides: "In all criminal prosecutions, the accused shall enjoy the right...to have the Assistance of Counsel for his defence."
Kimmelman v. Morrison, 477 U.S. 365 (1986), was a decision of the U.S. Supreme Court that clarified the relationship of the right to effective assistance of counsel under the Sixth Amendment to other constitutional rights in criminal procedure. In this case, evidence against the defendant was probably seized illegally, violating the Fourth Amendment, but he lost the chance to argue that point due to his lawyer's ineffectiveness. The prosecution argued that the defendant's attempt to make a Sixth Amendment argument via a habeas corpus petition was really a way to sneak his Fourth Amendment argument in through the back door. The Court unanimously disagreed, and held that the Fourth Amendment issue and the Sixth Amendment issue represented different constitutional values, and had different requirements for prevailing in court, and therefore were to be treated separately by rules of procedure. Therefore, the habeas corpus petition could go forward. In its opinion, the Court also gave guidance on how to apply its decisions in Stone v. Powell and Strickland v. Washington.