Originally Posted by
FlyingRabbit
You don't. Two hours for security and border control should be more than enough under normal circumstances. I've had much worse experiences in any given US airport.
I highlighted "normal circumstances" as 2 hours is generally sufficient. However, there are times when it isn't due to numerous various factors. I have flown back and forth enough to encounter several of these abnormal situations, some even resulting in missed flights. Consequently, I look for 3 hour connections, but if not available, will go with something less that approaches 2 hours.