The Order of the Sons of Italy in America is the largest and longest established national organization for men and women of Italian heritage in the United States. OSDIA's mission includes encouraging the study of Italian language and culture in America schools and universities, preserving Italian American traditions, culture, history and heritage; and promoting closer culture relations between the United States and Italy. The Sons of Italy Foundation, established by OSDIA, is a private, philanthropic institution that has contributed millions of dollars for scholarships, medical research, cultural preservation and disaster relief. The Commission for Social Justice is the anti-defamation arm of OSDIA.