 On 8 November 2014, Pope Francis appointed Mamberti as Prefect of the Supreme Tribunal of the Apostolic Signatura, the final court of appeal for any ecclesiastical judgment, besides the Pope himself.Then-Archbishop Mamberti succeeded Raymond Leo Cardinal Burke, who was named Patron to the Order of Malta.On 4 January 2015, Pope Francis announced that he would make Archbishop Mamberti a cardinal on 14 February.