S.C. Code Ann. § 2-2-80

Any witness testifying before the investigating committee may have counsel present to advise him. The witness or his counsel may, during the time of testimony, claim any legal privilege recognized by the laws of this State in response to any question and is entitled to have a ruling by the chairman on any objection. In making his ruling, the chairman of the investigating committee shall follow as closely as possible the statutory law and the decisions of the courts of this State regarding legal privileges. The ruling of the chair may not be reviewed by the courts of this State except in a separate proceeding for contempt of the General Assembly.