Senator Miriam Defensor Santiago, a constitutional expert, warned critics of the Corona's appointment to obey the rule of law, saying that the appointment of Corona has already been laid to rest under the doctrine of res judicata, meaning that it can no longer be relitigated in court, because it has already been decided with finality. Further stating that "After the Supreme Court decision in De Castro v. Judicial and Bar Council last March, which settled the issue, any petition is now precluded, on the theory of so-called collateral estoppel," She also commented that "The problem with the critics is that they mistake the law as it is; with the law as it ought to be, according to their layman's interpretation. A line has to be drawn between the rule of law and the dystopian concept of freewheeling ethics,"