N.C. Gen. Stat. § 63A-21
If any member, officer, or employee of the Authority shall be interested either directly or indirectly, or shall be an officer or employee of or have an ownership interest in any firm or corporation, not including units of local government, interested directly or indirectly, in any contract with the Authority, the interest shall be disclosed to the Board and shall be set forth in the minutes of the Board. The member, officer, or employee having an interest shall not participate on behalf of the Authority in the authorization of any contract. Other provisions of law notwithstanding, failure to take any or all actions necessary to carry out the purposes of this section may not affect the validity of any bonds or notes issued under this Chapter.
N.C. Gen. Stat. § 63A-21