S.C. Code Ann. § 5-21-10: Prerequisites to creating debts or endorsing or guaranteeing notes and the like in cities over 45,000.

No city council of any city of over forty-five thousand inhabitants shall create any debt beyond the municipal income of the current year or endorse or guarantee the notes, bonds or obligations or accept the drafts of any person for any purpose whatsoever, unless the following terms and conditions be first observed and complied with:

(1) A resolution declaring the intention of the city council to create such indebtedness or incur such liability and specifying the amount thereof shall first have been passed at a regular meeting of the city council by a vote of two thirds of the whole body;

(2) The proposition, after being adopted in such manner by the city council, shall have been submitted to the qualified voters of the city at an election held under resolution of the city council after ninety days' notice thereof and two thirds of the number of qualified voters voting at such election shall have voted affirmatively; and

(3) The proposition shall have been submitted to the General Assembly for approval and approved by the General Assembly.