S.C. Code § 56-10-220
Every person applying for registration for a motor vehicle shall at the time of such registration and licensing declare the vehicle to be an insured motor vehicle under the penalty set forth in Section 56-10-260 and shall execute and furnish to the Department of Motor Vehicles his certificate that such motor vehicle is an insured motor vehicle, and that he will maintain insurance thereon during the registration period. The certificate must be in the form prescribed by the department with input from the Department of Insurance and the working group. The department may require any registered owner or any applicant for registration and licensing of a motor vehicle declared to be an insured motor vehicle to submit a certificate of insurance executed by an authorized agent or representative of an insurance company authorized to do business in this State. Such certificate must also be in a form prescribed by the department with input from the Department of Insurance and the working group. The Department of Motor Vehicles with input from the Department of Insurance and the working group may promulgate a regulation to require proof of insurance on new and renewal registrations which may be submitted on behalf of the applicant by the agent or insurer in a manner acceptable to the Department of Motor Vehicles.
S.C. Code § 56-10-220