Iowa Code § 261A.24
Sections 261A.1 through 261A.23 provide a complete, additional, and alternative method for the doing of the things authorized by this chapter and the limitations imposed by this chapter do not affect powers or rights conferred by other laws, and the issuance of obligations and refunding obligations under this chapter need not comply with the requirements of any other law applicable to the issuance of obligations. Except as otherwise expressly provided in this chapter, the powers granted to the authority under this chapter are not subject to the supervision or regulation and do not require the approval or consent of a city or political subdivision or department, division, commission, board, body, bureau, official, or agency of a political subdivision or of the state.
Iowa Code § 261A.24