Excited to attend to the ATU 59th Convention in Las Vegas, you get to the airport or border to enter United States only to realize you left your passport at home.
All Canadian citizens must have a valid passport to enter the United States. If you don’t have a valid passport you will be turned back by American border agents at the border or upon your arrival at the airport.
Don’t get left at the border and miss the ATU convention remember to bring your passport when you leave.