American Nurses AssociationThe American Nurses Association (ANA) is the only full-service professional organization representing the interests of the nation's 2.9 million registered nurses (RNs) through its 51 constituent member nurses associations, its 23 organizational affiliates, and its workforce advocacy affiliate, the Center for American Nurses. The ANA advances the nursing profession by fostering high standards of nursing practice, promoting the rights of nurses in the workplace, projecting a positive and realistic view of nursing, and by lobbying the Congress and regulatory agencies on health care issues affecting nurses and the public.