S.C. Code Ann. § 8-13-770

A member of the General Assembly may not serve in any capacity as a member of a state board or commission, except for the State Fiscal Accountability Authority, the Advisory Commission on Intergovernmental Relations, the Legislative Audit Council, the Legislative Council, the Legislative Services Agency, the Judicial Council, the Commission on Prosecution Coordination, the South Carolina Tobacco Community Development Board, the Tobacco Settlement Revenue Management Authority, the South Carolina Transportation Infrastructure Bank, the Commission on Indigent Defense, the South Carolina Research Authority, and the joint legislative committees.