USDA FSIS must approve the foreign country's food-safety system and the specific establishment before animal gut products can be imported. Shipments are subject to reinspection at the US port of entry. Importers should confirm that their supplier's establishment appears on the current FSIS-approved list for the relevant species and product type.

No. The heading explicitly excludes fish guts, bladders, and stomachs. Fish offal is classified elsewhere — typically under the fish and seafood chapters — so importers of mixed-species processing byproducts need to separate fish-derived material from mammalian or avian material for correct classification.