More and more travel nurses are finding themselves working in a hospital that has a nurses union. What does this mean for the traveling nurse? First, know that this trend is gaining steam.  Just this past December, three large RN unions (in California, Massachusetts and Maryland) merged to form the 150,000-member National Nurses United.  Its mission? Says Deborah Burger, RN, one of three charter co-presidents of NNU: "We are going to make sure we organize every single direct-care RN in this country. RNs and our patients deserve to have a national nurses' movement that can advocate for them." The NNU -- which is seasoned, well-organized and well-financed -- has a very convincing sales pitch.  Among the “pros� of unionization are more security for nurses, more clout when battling administrators, and higher pay and seniority protection for nursing jobs.  Thus, many facilities are accepting a nurses union -- and many traveling nurses are choosing to join a union. To join, or not to join? Not everyone is a fan of RN unions. The “cons� include high union dues, having to comply with their bylaws and other regulations, and having one more layer of bureaucracy between the nurse and the patients. [+]