(a) The powers conferred by this subchapter are supplemental and alternative to other powers conferred by law, and this subchapter is intended as an independent and comprehensive conferral of powers to accomplish the purposes set forth herein.

(b) A municipality shall have power to issue from time to time general obligation bonds, revenue bonds, or revenue bonds also backed by the municipality's full faith and credit in its discretion to finance the undertaking of any improvements wholly or partly within such district. If revenue bonds are issued, such bonds shall be made payable, as to both principal and interest, solely from the income proceeds, revenues, tax increments, and funds of the municipality derived from or held in connection with its undertaking and carrying out of improvements under this chapter.

(c) Bonds issued under the provisions of this chapter are declared to be issued for an essential public and governmental purpose.

(d) Bonds issued under this section shall be authorized by resolution or ordinance of the local governing body and may be payable upon demand or mature at such time or times, bear interest at such rate or rates, be in such denomination or denominations, be in registered form, carry such conversion or registration privileges, have such rank or priority, be executed in such manner, be payable in such medium or payment, at such place or places, and be subject to such terms of redemption, such other characteristics, as may be provided by such resolution or trust indenture or mortgage issued pursuant thereto.

(e) [Repealed.]

(f) Such bonds may be sold at not less than par at public or private sales held after notice published prior to such sale in a newspaper having a general circulation in the municipality.

(g) In case any of the public officials of the municipality whose signatures appear on any bonds or coupons issued under this chapter shall cease to be such officials before the delivery of such bonds, such signatures shall, nevertheless, be valid and sufficient for all purposes, the same as if such officials had remained in office until such delivery. Any provisions of any law to the contrary notwithstanding, any bonds issued pursuant to this chapter shall be fully negotiable.

(h) In any suit, action, or proceeding involving the validity or enforceability of any bond issued under this chapter or the security therefor, any such bond reciting in substance that it has been issued by the municipality in connection with an improvement, as herein defined, shall be conclusively deemed to have been issued for such purpose and such improvement shall be conclusively deemed to have been planned, located, and carried out in accordance with the provisions of this chapter.

(i) [Repealed.]  (Added 1985, No. 87; amended 1987, No. 204 (Adj. Sess.), §§ 3-6; 2005, No. 184 (Adj. Sess.), § 2f; 2007, No. 190 (Adj. Sess.), § 59, eff. June 6, 2008; 2009, No. 54, § 37, eff. June 1, 2009; 2013, No. 80, § 8.)