S.C. Code § 59-109-180
The foregoing sections of this chapter shall be deemed to provide a complete, additional and alternative method for the doing of the things authorized thereby and shall be regarded as supplemental and additional to powers conferred by other laws; provided, the issuance of revenue bonds and revenue refunding bonds under the provisions of this chapter need not comply with the requirements of any other law applicable to the issuance of bonds. Except as otherwise expressly provided in this chapter none of the powers granted to the Authority under the provisions of this chapter shall be subject to the supervision or regulation or require the approval or consent of any municipality or political subdivision or any department, division, commission, board, body, bureau, official or agency thereof or of the State.
S.C. Code § 59-109-180