When entering the United States from an international destination, you almost always have to collect your checked bags and bring them through Customs at your first port of entry, even if they are "tagged through" to your final destination. After clearing Customs, you will find a "Baggage Re-check" belt immediately outside the customs hall where you simply drop your bags back off—you do not need to go to the main check-in desk again. In 2026, some "Pre-clearance" airports (like those in Dublin, Nassau, or Toronto) allow you to clear US Customs before you fly, meaning you can skip this step upon arrival. However, for almost all other international-to-domestic transfers, the "Collect-Clear-Drop" process is a mandatory security and customs requirement.