Card. Ouellet was responded to Viganò accusations against the Holy Father.
An excerpt, but you should read all of it:
Dear Pontifical Representative Emeritus, I tell you frankly that I believe it is incredible and unlikely from many points of view to accuse Pope Francis of having covered up after having full knowledge of the facts of this presumed sexual predator, and therefore of being an accomplice in the corruption rampant in the Church, to the point of considering him unfit to continue his reforms as the first Shepherd of the Church. I cannot understand how you could have allowed yourself to be convinced of this monstrous accusation which has no standing. Francis had nothing to do with the promotion of McCarrick to New York, Metuchen, Newark or Washington. He divested him from the dignity of Cardinal when a credible accusation of the abuse of a minor became evident. I have never heard Pope Francis allude to this self-styled advisor during his pontificate regarding nominations in America, though he does not hide the trust that he has in some of the Bishops. I presume that they are not preferred by you or by those friends who support your interpretation of the facts. I therefore consider it to be aberrant that you should profit by the horrible scandal of the sexual abuse of minors in the United States to inflict such an unprecedented and unmerited blow on the moral authority of your Superior, the Supreme Pontiff.