S.C. Code Ann. § 59-107-100: Full faith, credit, and taxing power of State pledged to pay bonds.

For the payment of the principal and interest on all state institution bonds, whose issuance is authorized by this chapter, there shall be pledged the full faith, credit, and taxing power of the State, and in addition, the revenues derived from the tuition fees received by the particular institution of higher learning for which such state institution bonds are issued must also be pledged.