When the constitutionality of a law is at issue in a trial, the court shall request a decision of the Constitutional Court, and shall judge according to the decision thereof.
(2) The Supreme Court shall have the power to make a final review of the constitutionality or legality of administrative decrees, regulations or actions, when their constitutionality or legality is at issue in a trial.
(3) Administrative appeals may be conducted as a procedure prior to a judicial trial. The procedure of administrative appeals shall be determined by Act and shall be in conformity with the principles of judicial procedures.