Just making sure. I didn't know HID's were illegal in most states. I don't think they are illegal here, but I do think they have stipulations on the color, although I don't know if that is true or not, as I have seen pink, green, yellow and blue HID's on some of the ricers here. I don't think Iowa actually enforces stuff like HID's, lifts etc unless either someone complains about it or it is a safety hazard, like having a headlight/brake light out.
I know they can be real assholes here with window tint though. I have been pulled over for that on my old Toyota, but thankfully got out of the ticket. The way I look at it(Hubby probably doesn't agree lol) is that they can ticket me to death, I'm doing what I want to the truck, and until they have a law that say's they can legally tow or impound my vehicle because of something like window tint, I will keep all of my "Illegal" mods. I don't see an issue with them as long as they are not a safety hazard for me or anyone else on the road.