The first "parking lot" law was passed in Oklahoma in 2004. Since then, other states have passed their own but the specifics of the laws vary from state to state.
One of the most hot button issues in modern day politics came to a head in Iowa today. Governor Kim Reynolds set a firm precedent on the Hawkeye State's position on gun control. Friday afternoon the Governor signed a bill into law, making it legal for Iowans to carry pistols and revolvers without a permit. In addition, it eliminates background checks for private person to person sales.