S.C. Code Ann. § 24-21-1160
(E) When promulgating a rule, the Interstate Commission shall:
(G) Subjects to be addressed within twelve months after the first meeting must at a minimum include:
(10) mediation, arbitration, and dispute resolution.
The existing rules governing the operation of the previous compact superseded by this act shall be null and void twelve months after the first meeting of the Interstate Commission created hereunder.