S.C. Code § 11-40-170
The bonds of the authority are made securities in which all public officials and bodies of the State and all municipalities, all insurance companies and associations, and other persons carrying on an insurance business, all banks, bankers, trust companies, savings banks, and savings associations, investment companies and other persons carrying on a banking business, and administrators, guardians, executors, trustees, and other fiduciaries and all other persons whatsoever, who are now or may hereafter be authorized to invest in bonds or other obligations of the State, may properly and legally invest funds including capital in their control or belonging to them. The bonds are also made securities which may be deposited with and may be received by all public officers and bodies of this State and all municipalities for any purposes for which the deposit of bonds or other obligations of this State are now or hereafter may be authorized.
S.C. Code § 11-40-170