They have only _ever_ been able to enforce their rulings through the acquiescence of the other branches. There's no enforcement mechanism in the constitution,

They have only _ever_ been able to enforce their rulings through the acquiescence of the other branches. There's no enforcement mechanism in the constitution, and neither is judicial review, for that matter. If the president wants to ignore the court, and congress doesn't do anything about it, there's nothing the courts can do, and that has always been true.