Williams v. Illinois

Holding: The admission of expert testimony about the results of DNA testing performed by non-testifying analysts did not violate the Confrontation Clause.

Judgment: Affirmed, 5-4, in an opinion by Justice Alito on June 18, 2012. Justice Breyer filed his own concurring opinion, while Justice Thomas filed an opinion in which he concurred in the judgment only. Justice Kagan filed a dissenting opinion, in which Justices Scalia, Ginsburg, and Sotomayor joined.

Briefs and Documents

Merits briefs for the Petitioner

• Brief for Sandy Williams
• Reply brief for Sandy Williams

Amicus briefs in Support of the Petitioner

• Brief for the California Public Defenders Association et al.
• Brief for the Innocence Network
• Brief for Richard D. Friedman
• Brief for Public Defender Service for the  District of Columbia and the National Association of Criminal Defense Lawyers

Merits briefs for the Respondent

• Brief for Illinois

Amicus briefs in support of the Respondent

• Brief for the United States 
• Brief for National District Attorneys Association et al,
• Brief for the New York County District Attorney’s Office and the New York County Office of the Chief Medical Examiner
• Brief for Ohio et al.

Certiorari-stage documents

• Opinion below (Supreme Court of Illinois)
• Petition for certiorari
• Brief in opposition
• Petitioner's reply