It's extremely useful. What I have learned from intelligence briefings and from information in the public domain, media commentary, is that the Canadian passport is considered a high-value passport for terrorist operators because of the credibility of Canada and the Canadian passport. So we ought not to be naive. Now, of course, sometimes people obtain fraudulent passports, people who are not Canadian citizens. But we cannot exclude the possibility that people will on some occasions seek to obtain Canadian citizenship or use their Canadian citizenship precisely so they can move around the world raising fewer eyebrows and attracting less scrutiny in the service of terrorist organizations.
On March 21st, 2013. See this statement in context.