Iowa Code § 490.207
1. Unless the articles of incorporation provide otherwise, the board of directors may adopt bylaws to be effective only in an emergency as defined in subsection 4. The emergency bylaws, which are subject to amendment or repeal by the shareholders, may make all provisions necessary for managing the corporation during the emergency, including any of the following:
3. Corporate action taken in good faith in accordance with the emergency bylaws has all of the following effects:
2021 amendment effective January 1, 2022; 2021 Acts, ch 165, §230 Section stricken and rewritten
89 Acts, ch 288, §24; 2021 Acts, ch 165, §31, 230