“For over 125 years, jurists and scholars who have championed judicial restraint have looked back to James Bradley Thayer’s 1893 Harvard Law Review article, The Origin and Scope of the American Doctrine of Constitutional Law, as the seminal authority for the rule that courts should presume the constitutionality of a challenged law and only invalidate it if its unconstitutionality is “clear” and “beyond a reasonable doubt.” But Thayer presented those three rules (presumption of constitutionality, clear error rule, and reasonable doubt standard) as rooted in historical legal practice in America…”