Bangladesh, April 30 -- In the hallowed halls of the Supreme Court, the air crackled with anticipation as the justices delved into the intricate web of law and presidential power in the case of Donald Trump v United States. But conspicuously absent from the scene was the man himself, Donald Trump, whose presence was felt not in the plush surroundings of One First Street, but in a New York City courtroom, where he faced state charges relating to hush-money payments.

The stakes couldnt be higher. At the heart of the matter liethe question of whether ex-presidents, like Trump, should enjoy immunity from criminal prosecution for their official actions, while in office. A win for Trump in this legal tug-of-war wouldnt affect his troubles in N...