Mr. Speaker, in order to produce information on all interactions with citizens and residents of Canada to the level of detail requested, organizations would be required to manually verify each and every file they maintain. Organizations do not necessarily maintain records on interactions employees may have had with citizens or residents of Canada. For these reasons, as well as because of the extraordinary volume involved, it is not possible to produce the information requested.
In the House of Commons on November 29th, 2013. See this statement in context.