Iowa Code § 720.3: Suborning perjury.

A person who procures or offers any inducement to another to make a statement under oath or affirmation in any proceeding or other matter in which statements under oath or affirmation are required or authorized, with the intent that such person will make a false statement, or who procures or offers any inducement to one who the person reasonably believes will be called upon for a statement in any such proceeding or matter, to conceal material facts known to such person, commits a class “D” felony.