Originally Posted by
BigFlyer
Am I missing something here, or is there some way it benefits the passenger? If not, is it benefiting the airline or the US government in some way?
To me the logic seems obvious. By pre-clearing customs and immigration then you can fly in to a domestic gate. It allows a greater amount of traffic to the US from Canada without tying up gates in International terminals. Now whether or not this is a benefit to the customer is up for debate.