The issue is that we're dealing with Canadian and American entries and exits. Let's leave aside our good friends in the United States and just look at it from this point of view. Here we are in Canada, and we have documentation of people entering Canada. We don't have any documentation of them exiting Canada, unless there is removal by way of a deportation order, so that person is put on an airplane and removed. If it's a voluntary departure, you don't know if he or she has gone. Never mind tying ourselves to the U.S.; we don't have our own ducks lined up in Canada. When we know that someone has a three-month visitor's visa and they apply for a six-month extension and don't get it, nobody follows up and says, “Hey, maybe he's still here.” That's where the problem lies, that we ourselves don't do any proper documentation.
On March 1st, 2012. See this statement in context.