Was Donald Trump a king as president? The US supreme court thinks so

Is the president a king? The US supreme court thinks so. On Monday, in its very last ruling of the term, the chief justice, John Roberts, writing for the court’s six conservatives, held in Trump v United States that Donald Trump has “absolute immunity” from criminal prosecution for all acts that can be interpreted as part of the official course of his “core” duties, and “presumptive” immunity for all other official acts.

The move dramatically extends executive authority, insulates past and future presidents from prosecution for illegal or even treasonous actions they...