Perhaps the Aga Khan asked him to stay away.  Since Trudeau's Christmas vacation at Aga's island there has been nothing but bad publicity, at least in Canada, for the Aga.  We are now learning that the ownership of the island is unknown which might lead some to suspect that the Aga Khan organization is using their charitable funds for more than just charity work.  Aga maybe saying with friends like Trudeau who needs enemies.