At the direction of the Vatican's head for doctrine, the apostolic nuncio to the U.S. has written a letter stating that Catholics “are not permitted” to participate in meetings which take for granted that the supposed Marian apparitions in Medjugorje are credible.
“The Congregation (for the Doctrine of the Faith) has affirmed that, with regard to the credibility of the 'apparitions' in question, all should accept the declaration … which asserts: 'On the basis of the research that has been done, it is not possible to state that there were apparitions or supernatural revelations,'” Archbishop Carlo Vigano wrote in an Oct. 21 letter to the bishops of the U.S., sent to the general secretary of the U.S. Conference of Catholic Bishops.
“It follows, therefore, that clerics and the faithful are not permitted to participate in meetings, conferences or public celebrations during which the credibility of such 'apparitions' would be taken for granted.”
Archbishop Carlo Maria Vigano, the papal nuncio to
the United States, is in effect the Vatican’s US ambassador
EWTN News confirmed that the letter was sent to every diocese in the U.S.