422.12H  Income tax checkoff for fish and game protection fund.
  A person who files an individual or a joint income tax return with the department of revenue under section 422.13 may designate a contribution to the state fish and game protection fund authorized pursuant to section 456A.16.
2006 Acts, ch 1158, §28
Limitation on number of income tax return checkoffs; automatic repeal of certain checkoffs; see §422.12E