S.C. Code Ann. § 2-3-22
Prohibition of members of the General Assembly from receiving in any one calendar year on account of service during the regular session of the General Assembly any amount which exceeds the total amount appropriated for personal service.
No member of the General Assembly may receive in any one calendar year on account of service during the regular session of the General Assembly any amount which exceeds the total amount appropriated for personal service for members of the General Assembly for the applicable fiscal year divided by one hundred seventy.