Rapporteur:
A rapporteur is a person who is appointed by an organization to report on the proceedings of its meetings. The term is a French-derived word.
For example, Dick Marty was appointed rapporteur by the Parliamentary Assembly of the Council of Europe to investigate extraordinary rendition by the CIA. [Wikipedia]
The example seems vaguely at odds with the definition.
Noted in “The Progeny Of A Fecund Racket,” Paul Fidalgo, The Morning Heresy:
Ahmed Shaheed, the UN’s Special Rapporteur on freedom of religion or belief, called upon world governments to “repeal all laws that undermine the exercise of the human rights to freedom of religion or belief,” warning about “trajectories of violence and even atrocity crimes.”