Once the immigration verification is complete, the CBSA then goes on a fishng expedition with the additional questions. It is amazing how many people may well incriminate themselves and then be sent to secondary.

No different to a good policeman who stops a person for speeding. A revenue ranger will write the ticket and let them go. A good police officer will look for fast food wrappers, empty coffee cups, pop cans, maps, any obvious modifications to the vehicle, these can all be indicative of a person who runs drugs and weapons. The good police officer may well ask a couple of innocuous questions and then slide in, "would you mind if I searched your car?" Almost all people say yes, go ahead, no problem. The police sieze many weapons and drugs this way. When the search question comes up, you have every right to say no and be on your way.

Next time CBSA primary goes fishing, ask them if they have established your citizenship and leave.

Thank you KVS.