Canon will repair any canon lens from anywhere in the world as long as you present the original receipt when claiming warranty, I'm speaking from experience as I have done it on numerous times, at canon HQ, fixation, Lehman's.
At their discretion they will also warranty repair imported DSLR, I know as I have had it done, as have a few others on this forum.
If your a CPS member its all irrelevant anyway as part of that system is for faster turn around of repairs anywhere in the world, warranty repairs included.
I have even had a lens warranty repaired without the receipt, as Canon will take the manufacture date of the lens and repair it under warranty upto 15 months from manufactures date, they allow the extra for storage and time sat on retailers shelves.
My advice is dont worry about it, put the receipt safe, and enjoy shooting.