S.C. Code § 2-69-20
Every joint study committee created by act or resolution of the General Assembly, in the discharge of its duties, including, but not limited to, the conducting of studies or investigations, is, by majority vote of the committee, authorized to request a standing committee of the Senate or House of Representatives to issue subpoenas and subpoenas duces tecum on behalf of the joint study committee to any agency, department, board, or commission of this State or of any political subdivision of this State or to any representative of any agency, department, board, or commission of this State or of any political subdivision of this State to compel the attendance of witnesses and production of documents, books, papers, correspondence, memoranda, and other relevant records to its work, investigation, or study. The committee shall have the right to receive the subpoenaed evidence in executive session. The committee must seek instructions from the President of the Senate and the Speaker of the House of Representatives as to which standing committee shall issue the subpoena. The standing committee that issues a subpoena on behalf of a joint study committee must comply with the procedures prescribed Section 2-69-40.
S.C. Code § 2-69-20