I can only speak from our experience in administering this act. If a person has dual citizenship, neither citizenship trumps the other. It is a question of analyzing the person's background in terms of where they have the most personal contacts or have lived most of their life. I have seen a Canadian who committed a crime in Canada, and who also had British citizenship, being transferred to the U.K. I have seen a Canadian who also had citizenship in an eastern European country, and who committed a crime in eastern Europe, becoming eligible for a transfer to Canada.
I'm speaking only of eligibility for transfer in that limited context. There's no exclusion of one citizenship for a person who has dual citizenship. If a person has Canadian citizenship, is living, for example, in the U.S., has committed a crime in the U.S., and wants to come back to Canada without ever having lived in Canada beyond his infant days, the act compels the minister to look at whether he has any real connection to Canada. It's not a question of citizenship. Their citizenship would allow them to be transferred here, but practically speaking, the question is whether they have a substantial connection to this country.