(65 ILCS 5/3.1-40-15) (from Ch. 24, par. 3.1-40-15)
    Sec. 3.1-40-15. Rules; expulsion. The city council shall determine its own rules of proceeding and punish its members for disorderly conduct. With the concurrence of two-thirds of the aldermen then holding office, it may expel an alderman from a meeting, but not a second time for the same incident.
(Source: P.A. 87-1119.)