Roger,
But Canada has the rule of maintaining not being Absent for more than 163 days, once you enter first and secure your PR card. Since, I'll be starting my graduate program in the US from this Jan 2011, if I enter Canada prior to that entering US for my studies, it would be utterly implausible for me to visit Canada every 6 months to keep my PR status valid.
It's quite a situation!
What do you reckon on that?
Thanks for your previous comment. I truly appreciate it.