50 ILCS 465/15
The exercise of any or all powers granted by this Act shall be authorized and the bonds shall be authorized to be issued under this Act for the purposes set forth in this Act, by an ordinance adopted by the corporate authorities that takes effect immediately upon adoption. The ordinance shall set forth a finding and declaration (i) of the public purpose therefor and (ii) that the ordinance is adopted pursuant to this Act, which finding and declaration shall be conclusive evidence of the existence and sufficiency of the public purpose and of the power to carry out and give effect to the public purpose.
The bonds shall bear interest at any rate or rates without regard to any other law pertaining to interest rate limitations, may be payable at any time or times, may be in one or more series, may bear any date or dates, may mature at any time or times not exceeding 40 years from their respective dates, may be payable in any medium of payment at any place or places, may carry any registration privileges, may be subject to any terms of redemption at any premiums, may be executed in any manner, may contain any terms, covenants, and conditions, and may be in any form, either coupon or registered, that the corporate authorities shall provide. The bonds may be sold at public or private sale at any price, in any manner and upon any terms that the corporate authorities may authorize, and may be issued to the purchaser or purchasers of bonds sold under this Act. The bonds and interim notes shall be deemed to be securities and negotiable instruments within the meaning of and for all purposes of the Uniform Commercial Code.
50 ILCS 465/15