S.C. Code Ann. § 36-9-307
(b) Except as otherwise provided in this section, the following rules determine a debtor's location:
(f) Except as otherwise provided in subsection (i), a registered organization that is organized under the law of the United States and a branch or agency of a bank that is not organized under the law of the United States or a State are located:
(g) A registered organization continues to be located in the jurisdiction specified by subsection (e) or (f) notwithstanding:
(k) This section applies only for purposes of this part.
SUBPART 2. PERFECTION