Nursing Fundamental
Not only is there a national scope of Nursing practice, but state by state scopes. I know that RNs can do various things that may differ than one in another state or another practice may have. Name a couple of things you may or may not be able to do that another nurse can or cannot do in a different state (that you know of).
http://www.nursingworld.org/EspeciallyForYou/AdvancedPracticeNurses/Scope-of-Practice-2