The Catholics in the Vatican love extreme right wing politics, Pius the XII made Hitler's Birthday a religious Holiday during WW2, when he was convinced Hitler would win. He also wrote to Roosevelt after the war, insisting that if there had to be US occupying troops in Rome after the war that they not be black, because that would lead to hundreds of rapes and a "litters of half breed child children."
Hence their reticence to condemn Trump, as they failed to condemn the Holocaust and there still ongoing reluctance to excommunicate Hitler.