Texas Local Government Code - LOC GOV'T § 293.053. Examination and Approval

(a) After the authority authorizes bonds, including refunding bonds, it shall submit the bonds and the record relating to their issuance to the attorney general. If the bonds purport to be secured by a pledge of proceeds of an existing lease with the county or another governmental agency, a copy of the lease contract and the proceedings of the governmental authority authorizing the lease shall also be submitted.

(b) The attorney general shall examine the submitted documents and shall approve the bonds and the lease contract, if any, if they are determined to be valid. On approval of the attorney general, the comptroller of public accounts shall register the bonds.

(c) On approval and registration of the bonds under this section, the bonds and the lease contract, if any, are valid, binding, and incontestable.