 Dennett immediately formed a new organization, the Voluntary Parenthood League.Her sole purpose was to revise federal obscenity-focused legislation to exclude birth control, rather than tackle the issue on a state-by-state basis.The organization's successor was the American Birth Control League, founded by Margaret Sanger "to enlighten and educate all sections of the American public in the various aspects of the dangers of uncontrolled procreation and the imperative necessity of a world program of Birth Control."