S.C. Code § 34-13-160
Any banking institution or trust company organized under the laws of this State may invest in, or lend money on the security of: Federal farm loan bonds issued by Federal land banks pursuant to the Federal Farm Loan Act as amended, bonds issued by the Federal Farm Mortgage Corporation pursuant to the provisions of an act of Congress known as the "Federal Farm Mortgage Corporation Act," Federal Intermediate Credit Bank debentures issued pursuant to the Federal Farm Loan Act as amended, and debentures issued by the Central Bank for Cooperatives and regional banks for cooperatives, organized under the Farm Credit Act of 1933, and any notes, bonds, debentures, or other similar obligations, consolidated or otherwise, issued by farm credit institutions pursuant to authorities contained in the Farm Credit Act of 1971 (Public Law 92-181) or by any of such banks. A banking institution or trust company organized under the laws of this State making an investment or loan authorized by this section shall not be chargeable in its account for a greater rate of interest than the amount actually received on the investment or loan.
S.C. Code § 34-13-160