National Nurses United (NNU) is the largest organization of registered nurses in the United States. With more than 225,000 members, it is the farthest-reaching union and professional association of registered nurses in the U.S. Founded in 2009 through the merging of the California Nurses Association/National Nurses Organizing Committee, the United American Nurses, and the Massachusetts Nurses Association, the NNU focuses on amplifying the voice of direct care RNs and patients in national policy. The union's policy positions include the enactment of safe nurse-to-patient ratios, patient advocacy rights at the Executive and State level, and legislation for single-payer health care to secure "quality healthcare for all, as a human right." The organization's goal is to "organize all direct care RNs into a single organization capable of exercising influence over the healthcare industry, governments, and employers."