There was some discussion of needing passports for Canada. I know a little bit about this... For the last several years a passport book or passport card is needed. Alternatively, there are a few states, including New York, that issue "enhanced driver's licenses," which are acceptable. I know that DR Kate has one. When you live in the Buffalo area, it's not unusual to go to Canada for the afternoon or evening. The passport card and enhanced license are only good when traveling by land or sea. You need a passport book when flying.