South carolina constitution
Article V: judicial department
Section 23

It shall be the duty of the General Assembly to pass laws for the change of venue in all cases, civil and criminal, upon proper showing, supported by affidavit, that a fair and impartial trial cannot be had in the county where such action or prosecution was commenced. The State shall have the same right to move for a change of venue that a defendant has for such offenses as the General Assembly may prescribe.