What is an Importer Security Filing?

Under the new rule, before merchandise arriving by vessel can be imported into the United States, the “Importer Security Filing (ISF) Importer,” or their agent (e.g., licensed customs broker), must electronically submit certain advance cargo information to CBP in the form of an Importer Security Filing. This requirement only applies to cargo arriving in the United States by ocean vessel; it does not apply to cargo arriving by other modes of transportation.