Why Isn’t This A Law In Minnesota?!?!

I read an article this morning on WCCO's website about a small town in Ohio that has introduced a new law making it illegal for people to drive with their dog sitting in their lap. It annoys me every time I see someone doing this because it's such an obvious safety issue. I was actually kind of surprised to learn that it isn't illegal in most places.

Sgt. Troy Christianson says, "There are no specific laws in Minnesota stating where a pet is allowed in a vehicle.  As for a dog on a lap, or head hanging out an open window, there would be no violation of law and no citation issued for just that in itself." He did explain that law enforcement has the right to issue citations if they see you and your pet cruising along and the officer thinks your pet is interfering with your ability to drive safely.

Shouldn't this be prohibited everywhere?