Unravelling Williams v. Illinois

Forensics are a staple of modern criminal trials, yet what restrictions the Confrontation Clause places on forensic reports is entirely unclear. The Supreme Court’s last decision on the issue, Williams v. Illinois, sowed widespread confusion among lower courts and commentators, and just this past Term, Justices Gorsuch and Kagan dissented to the denial of certiorari in Stuart v. Alabama, a case that would have revisited (and hopefully clarified) Williams. Our Essay attempts to dispel the confusion in Williams v. Illinois. We argue that Williams involved three difficult and intertwined evidentiary questions: i) when experts may use inadmissible evidence as the basis of their opinions under Rule 703; ii) whether Rule 703 itself is consistent with the Confrontation Clause; and iii) whether reports that arise out of rigorous scientific processes implicate the Confrontation Clause at all. Along the way, we show that the answers to these questions help predict the future of the Confrontation Clause and offer a potential tool for improving forensic science.