There s often a $ exchange location at the border and there is always one at the airport. I have crossed from Ontario to the US this season at 3 different spots, and asked the usual questions. The questions stopped, or became much more congenial when I responded to the question, "Where are you going/Where have you been", with the 2-part answer, "FLYFISHING in ..........." Get that phrase in there somewhere is my recommendation ? and have a good time.