Clearly each government has its own regulations, and certainly those kinds of political issues, as well as national defence issues, are potentially more sensitive. As I mentioned, all of our allies have instituted procedures for actually dealing with that and for allowing for the release of those records that are less sensitive while still maintaining necessary controls on those that are much more sensitive.
The problem with Canada is that there's no such mechanism. Essentially, everything is treated as though it's just as sensitive as it was the day it was created. Of course, many of these records are overclassified to begin with and perhaps weren't so sensitive even when they were created, so it's a problem today.