Sorry, I forgot who it was.
Can. 831 §1. Except for a just and reasonable cause, the Christian faithful are not to write anything for newspapers, magazines, or periodicals which are accustomed to attack openly the Catholic religion or good morals; clerics and members of religious institutes, however, are to do so only with the permission of the local ordinary.
§2. It is for the conference of bishops to establish norms concerning the requirements for clerics and members of religious institutes to take part on radio or television in dealing with questions of Catholic doctrine or morals.
Can. 832 Members of religious institutes also need permission of their major superior according to the norm of the constitutions in order to publish writings dealing with questions of religion or morals.