An open letter to Greg Hunt on medical consent, mandatory vaccines and their rollout. Will vaccine become mandatory in Australia? Many legal firms are currently battling this very question out in the Australian courts due to an outcry of indirect coercion by employers doing that which the government cannot do directly. Section 51xxiiiA of the Constitution and the supporting case law of the High Court have already answered these very delicate subjects. We now await the conformation of the State Supreme Court.