Boards of Nursing are responsible for enforcing each state's nurse practice act. It just so happens that our (Texas) nurse practice act happens to be more detailed than most. We have case law that has established clear cut professional standards of conduct - Nurse Patient relationship - that is unique. It is based on a landmark case, Lunsford v. Board of Nurse Examiners, 648 S.W. 2d 391 (Tex. App. -- Austin 1983). The concept of the nurse's duty to promote client safety also serves as the basis for behavior that could be considered unprofessional conduct by a nurse. This is unique to Texas.
Whenever there are changes in technology or practice expectations, the Texas Board issues a very detailed position statement to guide professional practice.
Soooo - maybe our board is 'tougher', but I like to believe that we do a better job of protecting the public as a result.