N.C. Gen. Stat. § 159D-51

Bonds or notes issued under the provisions of this Article are securities in which all public officers and public bodies of the State and its political subdivisions, and all insurance companies, trust companies, banking associations, investment companies, executors, administrators, trustees and other fiduciaries may properly and legally invest funds, including capital in their control or belonging to them. These bonds or notes are securities which may properly and legally be deposited with and received by any State or municipal officer or any agency or political subdivision of the State for any purpose for which the deposit of bonds, notes or obligations of this State is authorized by law.