S.C. Code § 11-37-220
The bonds issued by the authority are legal investments in which all public officers or public bodies of the State, its political subdivisions, all municipalities and political subdivisions, all insurance companies and associations and other persons carrying on insurance business, all banks, bankers, banking associations, trust companies, savings banks, savings associations, including savings and loan association investment companies, and other persons carrying on a banking business, all administrators, guardians, executors, trustees, and other fiduciaries, and all other persons who are now or may be authorized in the future to invest in bonds or other obligations of the State, may invest funds in their control or belonging to them. The bonds of the authority are also securities which may be deposited with and received by all public officers and bodies of the State or any agency or political subdivision of the State and all municipalities and public corporations for any purpose for which the deposit of bonds or other obligations of the State is now or may later be required by law.
S.C. Code § 11-37-220