Smith v. Arizona, 602 U.S. 779

Jason Smith was charged in Arizona with various drug offenses after law enforcement found suspected controlled substances in a shed where he was present.
The seized substances were tested by forensic analyst Elizabeth Rast, who prepared notes and a report detailing her testing procedures and conclusions.
Before trial, Rast left her position and did not testify. Instead, the prosecution called substitute analyst Greggory Longoni, who reviewed Rast’s records and testified about her findings and his own “independent” opinion.
Longoni’s testimony relayed Rast’s procedures and results to the jury to substantiate the State’s claim regarding the identity of the substances.
Smith objected, arguing this violated his Sixth Amendment right to confront the actual witness (Rast), but the Arizona Court of Appeals rejected his claim, relying on a state rule allowing experts to discuss the basis of their opinions without the underlying statements being admitted for their truth.

Issue	Smith’s Argument	Arizona’s Argument	Held
Were Rast’s out-of-court statements admitted for their truth?	Yes, Longoni’s testimony presented Rast’s statements as true; Smith was denied a chance to cross-examine Rast.	No, statements were the basis for Longoni’s opinion, not for their truth (per Arizona Rule of Evidence 703).	Yes, if support for an expert’s opinion depends on the truth of an out-of-court statement, it is admitted for its truth.
Does admitting substitute expert testimony in this way violate the Confrontation Clause?	Yes, because Smith could not confront the original analyst, violating precedent on testimonial evidence.	No, because Longoni gave his own independent opinion and Smith could have subpoenaed Rast.	Yes, if the absent analyst’s statements are testimonial, Smith’s Confrontation rights were violated.
Do evidentiary rules (such as Arizona/703) control constitutional analysis?	No, constitutional rights are not defined by rules of evidence; truth of the statement matters.	Yes, rules allow basis evidence to come in for limited purpose not implicating Confrontation.	No, the federal constitutional right governs, not evidentiary labels or state rules.
Were Rast’s statements “testimonial”?	Assumed yes (not challenged on appeal).	Possibly not; left open for further finding.	Not decided; remanded for state court to determine if statements were testimonial.

Crawford v. Washington, 541 U.S. 36 (defines Confrontation Clause rights regarding testimonial statements)
Melendez-Diaz v. Massachusetts, 557 U.S. 305 (applies Confrontation Clause to forensic reports/testimony)
Bullcoming v. New Mexico, 564 U.S. 647 (substitute analyst’s testimony insufficient under Confrontation Clause)
Davis v. Washington, 547 U.S. 813 (distinguishes testimonial and nontestimonial statements)
Anderson v. United States, 417 U.S. 211 (explains out-of-court statements offered for truth are hearsay)
Williams v. Illinois, 567 U.S. 50 (fractured opinions on basis/Confrontation Clause and expert testimony)