were appointed after exiting politics, only to later return to elected office. There have also been several senators who were appointed to the order prior to taking office; there were 15 senators who belonged to the order: Tommy Banks, Roméo Dallaire, Trevor Eyton, Irving Gerstein, Nancy Greene, Serge Joyal, Wilbert Keon, Jean Lapointe, Sandra Lovelace Nicholas, Frank Mahovlich, Donald Oliver, Kelvin Ogilvie, Nancy Ruth, Hugh Segal and Pamela Wallin. Further, in the same vein as prime ministers being appointed after leaving office, every chief justice of Canada from Robert Taschereau onward has been made a Companion. People who hold a ceremonial political office (for example sergeant-at-arms) are considered public servants and therefore can be invested while serving in that office. There is no rule that Order of Canada members cannot be inducted to any of the Canadian provincial or territorial orders. For example, Gordon Lightfoot is both a Companion of the Order of Canada and member of the Order of Ontario, and Oscar Peterson, who was born in Montreal but resided in Ontario during his later years, was simultaneously a Companion of the Order of Canada, Knight of the National Order of Quebec, and a member of the Order of Ontario. Media magnate Conrad Black, Baron Black of Crossharbour, was the only non-honorary member of the Order of Canada who did not hold Canadian citizenship. Black was appointed as an Officer of the order in 1990, and surrendered his Canadian citizenship in 2001 to overcome political hurdles preventing his appointment to the House of Lords. Black was convicted of mail fraud in 2007. On January 31, 2014, he was removed from the Order of Canada by Gov. Gen. David Johnston. Nomination, review, and appointment The Chancellery of Honours at Rideau Hall, which administers the Canadian honours system, permits anyone to submit nominations for the Order of Canada any time of the year. A form is completed – including notes on the candidate's life and accomplishments, the nominator's and the candidate's information (such as birth, citizenship, address, and occupation), and three supporters of the nomination – and sent to the Chancellery. Once there, the letter is kept in a file unannounced, due to privacy of the nominee and the person who made the nomination. Companion To be considered for appointment for the rank of Companion, one must have made "outstanding achievement and merit of the highest degree, especially in service to