The last time I pulled that stunt off, quoted some article in the Customs Act, and told her that it isn't any of her business where I stayed explaning that I could have stayed at the W New York or at a five cent hooker hotel and that either way it wouldn't be her business, I ended up in secondary.

Mind you, all CBSA officers think they can ask those questions. Some of my contacts at CIC also tell me that they can.

I personally don't think they can since once they are satisfied with my admissibility to Canada and the goods that I am importing they are to dismiss you and continue a line of questioning, but since I really don't want to go to secondary each time and get a record, I just answer the questions and get on my merry way.

Of course, if someone feels strongly enough about all this, you can always ATIP the SOP and see how far you get.