S.C. Code Ann. § 38-9-80
(A) The director or his designee shall require every insurer transacting, or desiring to transact, business in this State to deposit with him certificates of deposit of building and loan associations chartered by South Carolina or federal savings and loan associations located within the State in which deposits are guaranteed by the Federal Savings and Loan Insurance Corporation, not to exceed the amount covered by insurance, or of national banks located within the State or banks chartered by South Carolina in which deposits are guaranteed by the Federal Deposit Insurance Corporation, not to exceed the amount covered by insurance, or other securities which:
(C) Notwithstanding the limitations in this section as to the amount of deposits required, the director or his designee may require an insurer to deposit an amount of securities in excess of the limits based on his consideration of the following: