Treaty Bodies vs Charter Bodies
The structural distinction between UN Charter organs and treaty-based expert committees, with the jurisdictional and procedural consequences for practitioners.
The Constitutional Distinction
The United Nations system runs on two parallel legal tracks that practitioners routinely conflate. Charter bodies derive their authority directly from the UN Charter signed at San Francisco on 26 June 1945. Their membership is the membership of the United Nations itself: every state that has acceded under Article 4 is automatically subject to their jurisdiction. The Security Council (Articles 23–32), General Assembly (Articles 9–22), Economic and Social Council (Articles 61–72), the Secretariat (Articles 97–101), and the International Court of Justice (Articles 92–96) are the principal Charter organs. Subsidiary Charter bodies — the Human Rights Council (created by GA Resolution 60/251 of 15 March 2006), the Peacebuilding Commission (GA Resolution 60/180 and SC Resolution 1645 of 20 December 2005), and the Universal Periodic Review mechanism — inherit Charter-based legitimacy through their parent organ.
Treaty bodies, by contrast, exist because states have signed and ratified a specific multilateral convention that creates them. Their jurisdiction extends only to states parties, and only to the obligations enumerated in that treaty. The Human Rights Committee, for instance, was established by Article 28 of the International Covenant on Civil and Political Rights (entered into force 23 March 1976). The Committee on the Elimination of Racial Discrimination predates it, having been created by Article 8 of CERD (entered into force 4 January 1969) — the first UN human-rights treaty body. There are currently ten core human-rights treaty bodies, including the Committee Against Torture (CAT, Article 17), the Committee on the Rights of the Child (CRC, Article 43), and the Subcommittee on Prevention of Torture (OPCAT, 2006).
Membership, Composition, and Authority
Charter bodies are composed of states. Delegates sit as instructed representatives of governments, vote on government instructions, and bind their states through the body's outputs where the Charter so provides — most notably Security Council decisions under Chapter VII, which are binding on all members under Article 25. The General Assembly, by contrast, issues recommendations under Article 10; only its internal budgetary decisions under Article 17 bind members.
Treaty bodies are composed of independent experts elected by states parties but serving in their personal capacity. ICCPR Article 28(3) requires Human Rights Committee members to be "persons of high moral character and recognized competence in the field of human rights"; they take a solemn declaration under Article 38 to discharge functions impartially. They do not represent governments and cannot receive instructions. This expert status is the source of both their authority and their political vulnerability: states can dismiss findings as the views of individuals, not the verdict of the international community.
The outputs differ accordingly. Charter-body resolutions carry the political weight of state consensus or majority. Treaty-body outputs — Concluding Observations after periodic reports, General Comments interpreting treaty provisions, and Views on individual communications under optional protocols — carry interpretive authority but are not formally binding. The International Court of Justice nonetheless gave Human Rights Committee jurisprudence "great weight" in Diallo (Guinea v. DRC, Judgment of 30 November 2010, para. 66), and domestic courts from Strasbourg to Pretoria routinely cite General Comments. Practitioners who dismiss treaty-body output as soft law underestimate its diffusion into binding regional and domestic jurisprudence.