Just got waiver approved today and going to take a trip across the border tomorrow for the first time and was wondering if I can use the CBP one app to pay the $6 for the I-94 or do I need to do it in person the first time?
I also don’t really understand this I-94 thing. I’ve read old posts and some people say they get a stamp in their passport and some people get a white card which some people say you need to hand in and others say no you don’t. How do you prove that you’ve returned to Canada?