Versions of Iowa Code 359.31 - Power and control on LawServer 2023 Iowa Code 359.31 – Power and control 2022 Iowa Code 359.31 – Power and control 2020 Iowa Code 359.31 – Power and control 2018 Iowa Code 359.31 – Power and control 2016 Iowa Code 359.31 – Power and control 2014 Iowa Code 359.31 – Power and control. 2009 Iowa Code 359.31 – Power and control