The Antiterrorism and Effective Death Penalty Act of 1996 (AEDPA), Pub. L. 104–132 (text)(PDF), 110 Stat. 1214, enacted April 24, 1996, was introduced to the United States Congress in April 1995 as a Senate Bill. The bill was passed with broad bipartisan support by Congress in response to the bombings of the World Trade Center and Oklahoma City. It was signed into law by President Bill Clinton.
Nix v. Whiteside, 475 U.S. 157 (1986), was a United States Supreme Court decision that dealt with the effective assistance of counsel during a criminal trial.
In United States law, ineffective assistance of counsel (IAC) is a claim raised by a convicted criminal defendant asserting that the defendant's legal counsel performed so ineffectively that it deprived the defendant of the constitutional right guaranteed by the Assistance of Counsel Clause of the Sixth Amendment to the United States Constitution. Ineffectiveness claims may only be brought where the defendant had the right to counsel, ordinarily during the critical stages of a prosecution.
Johnson v. Zerbst, 304 U.S. 458 (1938), was a United States Supreme Court case, in which the petitioner, Johnson, had been convicted in federal court of feloniously possessing, uttering, and passing counterfeit money in a trial where he had not been represented by an attorney but instead by himself. Johnson filed for habeas corpus relief, claiming that his Sixth Amendment right to counsel had been violated, but he was denied by both a federal district court and the court of appeals.
Strickland v. Washington, 466 U.S. 668 (1984), was a landmark Supreme Court case that established the standard for determining when a criminal defendant's Sixth Amendment right to counsel is violated by that counsel's inadequate performance.
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.
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.
The Supreme Court of the United States handed down nineteen per curiam opinions during its 2009 term, which began on October 5, 2009, and concluded October 3, 2010.
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.
Smith v. Spisak, 558 U.S. 139 (2010), was a United States Supreme Court decision on the applicability of the Antiterrorism and Effective Death Penalty Act of 1996. It further examined issues of previous court decisions on jury instructions and the effectiveness of counsel.
Burt v. Titlow, 571 U.S. 12 (2013), was a United States Supreme Court case in which the Court held that when a state court makes a factual determination the federal courts must defer to its judgment so long as it is reasonable.
The Supreme Court of the United States handed down eight per curiam opinions during its 2014 term, which began October 6, 2014 and concluded October 4, 2015.
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.
Lafler v. Cooper, 566 U.S. 156 (2012), was a United States Supreme Court case in which the Court clarified the Sixth Amendment standard for reversing convictions due to ineffective assistance of counsel during plea bargaining. The Court ruled that when a lawyer's ineffective assistance leads to the rejection of a plea agreement, a defendant is entitled to relief if the outcome of the plea process would have been different with competent advice. In such cases, the Court ruled that the Sixth Amendment requires the trial judge to exercise discretion to determine an appropriate remedy.
Missouri v. Galin E. Frye, 566 U.S. 134 (2012), was a case in which the United States Supreme Court ruled that attorneys of criminal defendants have the duty to communicate plea bargains offered to the accused.
Garza v. Idaho, 586 U.S. ___, 139 S. Ct. 738 (2019), was a case in which the United States Supreme Court held that the presumption of prejudice for Sixth Amendment purposes applies regardless of whether a defendant has waived the right to appeal.
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.
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.
