The board may provide that the resolutions authorizing issuance of refunding bonds issued under Section 34-65 shall be effective without the submission thereof to the voters of the school district or city for approval.
The validity of each refunding bond so executed shall remain unimpaired, although one or more of the signing officers have ceased to be such officer or officers before the delivery of the bond to the purchaser.
105 ILCS 5/34-68