Apparently Thomas Mulcair has French citizenship.
Though he was born in Ottawa, Mulcair was able to apply for and receive French citizenship because his spouse, Catherine, was born in France. Under French law, spouses of French citizens can apply, as Mulcair did, to become citizens themselves after five years of marriage and after demonstrating their ability to speak French.
“Mr. Mulcair is very proud to share the nationality of his wife, who shares his,” Mulcair spokesperson Chantale Turgeon told TVA. “He sees no conflict with his Canadian citizenship or duties. Dual citizenship is a reality for many Canadians who are proud of their origins and a source of enrichment for our diverse society.”