When your baggage was checked in through to the final destination with the tag printed as such, you do not have to pick up your baggage at Vancouver Airport.
Please follow the sign "USA Connections."
Since, on the way, the airport staff will confirm the filling-in status of the disembarkation form for the U.S., please completely fill out before arrival and proceed.
After the confirmation of entry document, if check-in is necessary, please either check-in by the automated check-in machine or ask for the transfer desk.
Then go through Security Check and Baggage check by video camera, and please proceed to passport control for the U.S. and Customs.
Please present your passport and immigration document for the U.S. For eligible passengers, Automated Passport Control(APC) is available.
After the Customs inspection, please proceed to the boarding gate for your connecting flight.