A political subdivision of the state shall not enact an ordinance regulating the ownership, possession, legal transfer, lawful transportation, registration, or licensing of firearms when the ownership, possession, transfer, or transportation is otherwise lawful under the laws of this state. An ordinance regulating firearms in violation of this section existing on or after April 5, 1990, is void.DC Gun Rights Examiner, Mike Stollenwerk recaps our Tom Miller's shenanigans with Miller's recent "opinion" to county attorneys. He basically gave a green light for cities and counties to regulate carrying of weapons on property they own.
Iowa Code Section 724.28
I local municipalities enact regulations against carrying concealed or open, the lawsuits will follow. And maybe that's the idea. Miller and his lawyer friends will make a ton of money arguing on either side. The losers will end up being the citizens of the state. We will have to pay lawyers fees, settlement fees, etc and this will take years to settle.
Mike did a good job of looking at Miller's opinion and what it's based on. Head on over and give it a read.