Trump v. United States
Sean Wilentz, writing for NYRB, refers to it as "the most sweeping judicial reconstruction of the American presidency in history"
"Its vague distinction between official and unofficial presidential acts gives any president carte blanche to commit crimes up to and including assassination and treason with virtual impunity from criminal prosecution, as long as he can justify those crimes as part of his “official” duties. In effect it invests the presidency with quasi-monarchial powers, repudiating the foundational principle of the rule of law."