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.
Moore et al. v. Dempsey, 261 U.S. 86 (1923), was a United States Supreme Court case in which the Court ruled 6–2 that the defendants' mob-dominated trials deprived them of due process guaranteed by the Due Process Clause of the Fourteenth Amendment. It reversed the district court's decision declining the petitioners' writ of habeas corpus. This case was a precedent for the Supreme Court's review of state criminal trials in terms of their compliance with the Bill of Rights.
Napoleon Beazley was a convicted murderer executed by lethal injection by the State of Texas for the murder of 63-year-old businessman John Luttig in 1994.
Day v. McDonough, 547 U.S. 198 (2006), is a US Supreme Court case involving the one-year statute of limitations for filing habeas corpus petitions that was established by the Antiterrorism and Effective Death Penalty Act of 1996 (AEDPA). In a 5–4 decision, the Court ruled that if the government unintentionally failed to object to the filing of a petition after the AEDPA limitations period has expired, it is not an abuse of discretion for a district court to dismiss sua sponte the petition on that basis.
Lockyer v. Andrade, 538 U.S. 63 (2003), decided the same day as Ewing v. California, held that there would be no relief by means of a petition for a writ of habeas corpus from a sentence imposed under California's three strikes law as a violation of the Eighth Amendment's prohibition of cruel and unusual punishments. Relying on the reasoning of Ewing and Harmelin v. Michigan, the Court ruled that because no "clearly established" law held that a three-strikes sentence was cruel and unusual punishment, the 50-years-to-life sentence imposed in this case was not cruel and unusual punishment.
Whitus v. Georgia, 385 U.S. 545 (1967), found in favor of the petitioner (Whitus), who had been convicted for murder, and as such reversed their convictions. This was due to the Georgia jury selection policies, in which it was alleged racial discrimination had occurred.
Ellis Wayne Felker was an American convicted and executed in 1996 in Georgia for the 1981 murder of Evelyn Joy Ludlam, a young woman who was working as a waitress while she attended college.
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.
Barefoot v. Estelle, 463 U.S. 880 (1983), is a United States Supreme Court case. The Court ruled on the admissibility of clinical opinions given by two psychiatrists hired by the prosecution in answer to hypothetical questions regarding the defendant's future dangerousness and the likelihood that he would present a continuing threat to society in this Texas death penalty case. The American Psychiatric Association submitted an amicus curiae brief in support of the defendant's position that such testimony should be inadmissible and urging curtailment of psychiatric testimony regarding future dangerousness and a prohibition of such testimony based on hypothetical data.
Schlup v. Delo, 513 U.S. 298 (1995), was a case in which the United States Supreme Court expanded the ability to reopen a case in light of new evidence of innocence.
Lefkowitz v. Newsome, 420 U.S. 283 (1975), is a U.S. Supreme Court case which held that when state law permits a defendant to plead guilty without giving up his right to judicial review of specified constitutional issues, such as the lawfulness of a search or the voluntariness of a confession, the defendant is not prevented from pursuing those constitutional claims in a federal habeas corpus proceeding.
Beard v. Kindler, 558 U.S. 53 (2009), is a United States Supreme Court case that deals with the federal review of state laws, known as the adequate and independent state ground doctrine.
The Supreme Court of the United States handed down ten per curiam opinions during its 2010 term, which began October 4, 2010 and concluded October 1, 2011.
Skinner v. Switzer, 562 U.S. 521 (2011), is a decision by the U.S. Supreme Court regarding the route through which a prisoner may obtain biological DNA material for testing to challenge his conviction; whether through a civil rights suit or a habeas corpus petition. A majority of the Court held that the civil rights path was the appropriate path.
Davis v. Ayala, 576 U.S. 257 (2015), was a case in which the Supreme Court of the United States upheld a death sentence of a Hispanic defendant despite the fact that all Blacks and Hispanics were rejected from the jury during the defendant's trial. The case involved a habeas corpus petition submitted by Hector Ayala, who was arrested and tried in the late 1980s for the alleged murder of three individuals during an attempted robbery of an automobile body shop in San Diego, California in April 1985. At trial, the prosecution used peremptory challenges to strike all Black and Hispanic jurors who were available for jury service. The trial court judge allowed the prosecution to explain the basis for the peremptory challenges outside the presence of Ayala's counsel, "so as not to disclose trial strategy". Ayala was ultimately sentenced to death, but he filed several appeals challenging the constitutionality of the trial court's decision to exclude his counsel from the hearings.
Foster v. Chatman, 578 U.S. ___ (2016), was a United States Supreme Court case in which the Court held that the state law doctrine of res judicata does not preclude a Batson challenge against peremptory challenges if new evidence has emerged. The Court held the state courts' Batson analysis was subject to federal jurisdiction because "[w]hen application of a state law bar 'depends on a federal constitutional ruling, the state-law prong of the court’s holding is not independent of federal law, and our jurisdiction is not precluded,'" under Ake v. Oklahoma.
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.
Simmons v. South Carolina, 512 U.S. 154 (1994), is a United States Supreme Court case holding that, where a capital defendant's future dangerousness is at issue, and the only alternative sentence available is life imprisonment without the possibility of parole, the sentencing jury must be informed that the defendant is ineligible for parole.
Martinez v. Ryan, 566 U.S. 1 (2012), was a United States Supreme Court case which considered whether criminal defendants ever have a right to the effective assistance of counsel in collateral state post-conviction proceedings. The Court held that a procedural default will not bar a federal habeas court from hearing ineffective-assistance-of-trial-counsel if there was no counsel or ineffective counsel in an initial-review collateral proceeding.
