Certification and quality assurance are promoted through the Academy of Certified Social Workers, the NASW Register of Clinical Social Workers, and the Diplomate in Clinical Social Work. Among NASW’s political action programs are Political Action for Candidate Election and Educational Legislative Action Network. The Association also sponsors, through its 56 chapters in the U.S. and abroad, professional conferences and continuing education programs, and produces journals (such as the flagship Social Work), books, and major reference works for the profession.