The Optional Protocol sets up a mechanism by which individuals can file complaints with the Human Rights Committee against states (which have ratified the optional protocol) for non-compliance with the provisions of the International Covenant on Civil and Political Rights (ICCPR). Notably, the mechanism is available to all "individuals subject to the jurisdiction" of the State party rather than only citizens. It was adopted and opened for signature, ratification and accession by General Assembly resolution 2200A (XXI) of 16 December 1966.