The articles of incorporation, bylaws, rules and regulations of corporations hereafter organized under the provisions of either Title XII, subtitles 2 through 5, or Title XIII, subtitle 1 or 2, or whose organization may be adopted or amended thereunder, shall at all times be subject to legislative control, and may be at any time altered, abridged or set aside by law, and every franchise obtained, used, or enjoyed by such corporation may be regulated, withheld, or be subject to conditions imposed upon the enjoyment thereof, whenever the general assembly shall deem necessary for the public good.
Iowa Constitution, Art. I, §21; Art. VIII, §12
United States Constitution, Article I, §10