The rule of law is a fragile, tenuous thing. It depends on the willingness of judges to stand fast to core principles. It needs legislators to eschew feverish panic and cheap partisan gain, especially in times of crisis. And it demands that officials of the executive branch respect the will of the people, embodied in laws enacted each day on Capitol Hill. We've not been doing this so well recently, as the president repeatedly indicates his willingness to cast aside law and Congress stands aside heedlessly. But yesterday, the Supreme Court put the other two branches to shame when it confirmed that "the executive is bound to comply with the rule of law that prevails in this jurisdiction." Now it's up to the other two branches to follow its wise lead.