Security certificates and secret evidence
CBC News, Updated: September 5, 2012
What is a security certificate?
It is a legal tool that allows the Canadian government to detain and deport permanent residents or foreign nationals considered to be a security threat using secret evidence that the accused is not allowed to see. The certificate’s use is outlined in the Immigration and Refugee Protection Act.
… The certificates have been part of Canada’s immigration law since 1978. Since 1991, at least 29 security certificates have been issued …
On Feb. 23, 2007, the Supreme Court of Canada unanimously voted 9-0 that the security certificate system was unconstitutional, but suspended judgment for a year so that Parliament could draw up a new law ….
Lawyers for lead litigant Charkaoui and two other detainees — Harkat and Almrei — had argued before the court that security certificates locking people up without charge violated both Canadian and international law …