Rice imports under heading 1006 are subject to a TRQ that allows a specified volume to enter at a lower in-quota duty rate, with higher over-quota rates applying to additional quantities. The quota is administered by USDA, and country-specific allocations exist for several origins. Importers must ensure their entries are properly charged against the applicable quota category and country allocation.

Meslin is a mixture of wheat and rye grown and harvested together in the same field. It is classified with wheat under 1001 rather than separately. A shipment of wheat and rye that were grown and harvested separately and then blended would not qualify as meslin and could face a different classification analysis depending on the dominant grain.