Crossing into Canada

We just went into Canada a few months ago.  I always check online to find out the most recent restrictions.  They are pretty easy to follow.  NO, you don't have to have a Passport.  You can get through with an enhanced driver's license, at least you can in the state of Washington.  Again, check with customs.  We have passports and they do make things easier.  We really like the Canadian White wines and usually stock up when coming back.  There is a "limit" and you can check with the customs website.  We always go over, but not by a huge amount, and have yet to be charged any extra.  The penalty is rather small so being a dozen bottles over would not be a big expense.  I want to say something like 20 cents a bottle.  Again, check with customs.  This will be posted there.