Originally Posted by
seawolf
If you have an appointment at land border, CBP and CBSA interviews take place right after the other.
If your appointment is at airport then that appointment is only with CBSA and you can do the CBP interview at any preclearance location in Canada without an appointment. You cannot do the CBP portion at land border if CBSA portion was at airport.
My mother-in-law will get an interview at Gananoque ON centre in a few days? So she will be see both CBSA and CBP officer there?