Iowa Code § 1.14: Tribal ordinances or customs enforced.

Any tribal ordinance or custom adopted by the governing council of the Sac and Fox Indian settlement in Tama county in the exercise of any authority which it may possess shall, if not inconsistent with any applicable civil law of the state, be given full force and effect in the determination of civil causes of action pursuant to sections 1.12, 1.13, this section, and 1.15.