All passengers, including transit passengers, are subject to US immigration checks.
After Immigration, all passengers should proceed to Customs. If you have checked your baggage through to your final destination, you do not need to collect it when in transit. Please enter "Transit" on the customs declaration form, and proceed through Customs.
After Customs, there are two options: Passengers with a boarding pass for their connecting flight can proceed straight to the baggage security check on level 2. Passengers who do not have a boarding pass for their connecting flight should proceed to their airline check-in desk on the departures floor.
If you have checked your baggage through from Japan to your final destination, please present your ticket stub at your departure gate or the check-in counter to reconfirm.
All domestic and international flights depart from the same terminal.