S.C. Code § 7-5-185
2012 Act No. 265, Section 9, provides as follows:
"This act takes effect upon preclearance approval by the United States Department of Justice or approval by a declaratory judgment issued by the United States District Court for the District of Columbia, whichever occurs first."
Preclearance approval for 2012 Act No. 265 was received on October 1, 2012.