Sixth Amendment to the United States Constitution in the context of "Right to a fair trial"

The Confrontation Clause of the Sixth Amendment to the United States Constitution provides that "in all criminal prosecutions, the accused shall enjoy the right ... to be confronted with the witnesses against him." The right only applies to criminal prosecutions, not civil cases or other proceedings. Generally, the right is to have a face-to-face confrontation with witnesses who are offering testimonial evidence against the accused in the form of cross-examination during a trial. The Fourteenth Amendment makes the right to confrontation applicable to the states and not just the federal government.

In 2004, the Supreme Court of the United States formulated a new test in Crawford v. Washington to determine whether the Confrontation Clause applies in a criminal case.

A public defender is a lawyer appointed to represent people who otherwise cannot reasonably afford to hire a lawyer to defend themselves in a trial. Several countries provide people with public defenders, including the UK, Belgium, Hungary and Singapore, and some states of Australia. Brazil is the only country in which an office of government-paid lawyers with the specific purpose of providing full legal assistance and representation to the needy free of charge is established in the constitution. The Sixth Amendment to the US Constitution, as interpreted by the Supreme Court, requires the US government to provide legal counsel to indigent defendants in criminal cases. Public defenders in the United States are lawyers employed by or under contract with county, state or federal governments.

The United States Constitution contains several provisions regarding the law of criminal procedure.

Petit jury and venue provisions—both traceable to enumerated complaints in the Declaration of Independence—are included in Article Three of the United States Constitution. More criminal procedure provisions are contained in the United States Bill of Rights, specifically the Fifth, Sixth, Seventh and Eighth Amendments. With the exception of the Grand Jury Clause of the Fifth Amendment, the Vicinage Clause of the Sixth Amendment, and (maybe) the Excessive Bail Clause of the Eighth Amendment, all of the criminal procedure provisions of the Bill of Rights have been incorporated to apply to the state governments.

A citizen's right to a trial by jury is a central feature of the United States Constitution. It is considered a fundamental principle of the American legal system.

Laws and regulations governing jury selection and conviction/acquittal requirements vary from state to state (and are not available in courts of American Samoa), but the fundamental right itself is mentioned five times in the Constitution: Once in the original text (Article III, Section 2) and four times in the Bill of Rights (in the Fifth, the Sixth, and the Seventh Amendments).

Crawford v. Washington, 541 U.S. 36 (2004), is a landmark United States Supreme Court decision that reformulated the standard for determining when the admission of hearsay statements in criminal cases is permitted under the Confrontation Clause of the Sixth Amendment. The Court held that prior testimonial statements of witnesses who have since become unavailable may not be admitted without cross-examination.

In the United States, the exclusionary rule is a legal rule, based on constitutional law, that prevents evidence collected or analyzed in violation of the defendant's constitutional rights from being used in a court of law. This may be considered an example of a prophylactic rule formulated by the judiciary in order to protect a constitutional right. The exclusionary rule may also, in some circumstances at least, be considered to follow directly from the constitutional language, such as the Fifth Amendment's command that no person "shall be compelled in any criminal case to be a witness against himself" and that no person "shall be deprived of life, liberty or property without due process of law".

The exclusionary rule is grounded in the Fourth Amendment in the Bill of Rights, and it is intended to protect citizens from illegal searches and seizures. The exclusionary rule is also designed to provide a remedy and disincentive for criminal prosecution from prosecutors and police who illegally gather evidence in violation of the Fifth Amendment and its protection against self-incrimination. The exclusionary rule also protects against violations of the Sixth Amendment, which guarantees the right to counsel.