I would add that the situation will vary a lot from airport to airport, but we have seen that the lines in Canada can sometimes be shorter than in the U.S.
The other thing is that Canadian travellers don't necessarily go through as robust a process. Fingerprints are taken from international travellers, so sometimes, even if the line is the same in the U.S., if there are more travellers from other international points it can take longer for each one of them to process.
This is something that varies from airport to airport. We can't really quantify it.