My colleagues have covered the retroactivity rules many times before on the blog but the analysis for determining the retroactivity of new federal rules has changed in the last few years. Considering that and the recent Confrontation Clause rule for substitute analyst testimony announced in Smith v. Arizona, 602 U.S. ___; 144 S.Ct. 1785 (2024) (summarized here), an update is in order. Today’s post reviews the federal retroactivity analysis and examines how it may be applied to Smith. Read on for the details.