Originally Posted by Peterpan1

You do not need a passport to enter Canada, or re-enter the US. I know nobody said you did, but polls show tourism to Canada is down because a majorty of US citizens do not have a pasport and believe the passport requirement is already in force.

I have used nothing other than a drivers license, birth certificate, usually nothing. There is no harm in having a passport, and if you have a current one it's a good thing to bring. The passport requirement is being held off till '09 in a congresional deal taken today, according to CNN. Of course I have heard that before, but either way it isn't currently in place.