The cards have an expiry date that corresponds to the temporary permit that someone has received to be in Canada. In the briefing yesterday I think it was also mentioned that all of the cards issued were given an expiry date of 2004, so they were all to be expired within a year of that audit. Obviously, if there's a reason that they need to be extended, then there would have to be proof given as to why the cards should be extended and not expired.
On February 14th, 2007. See this statement in context.