I fly between Canada and USA many times a year and have never had a problem with either the Maple Leaf Lounge in YVR or any RCC in the US I have *G. As for the question is Canada considered and Intl destination from the USA the answer is according to IATA yes it is. However, the Government of Canada has deemed it a domestic flight so they can charge GST. This is the only destination outside of Canada where flyers get stuck paying the GST. What a rip off.