Speaking from experience there Paddy???
Eeh, yes - but not in the way you might think. Before the Schengen rules were engaged I did plenty of border-crossing trips. Even back then I was barely asked for my passport. The only times I need my pp is either flying, or going to England.
So I presume going from the U.S. to Canada will be quite simular, unless they have some advanced computer system at every single border
And bytheway yes, I am free to go wherever I want. By law anyway (not by her at home, that's why I don't go to every LMS race this year
)