IMPORTING INTO THE US: For questions about how to find the U.S. import duty for products exported from Qatar to the US, here is a step-by-step example of how to get general guidance on what the U.S. import duty may be.
Note: U.S. Customs advises that the information provided below is for GENERAL GUIDANCE ONLY, that you should get expert advice from a licensed customs broker, and, “ ... for very specific duty on a particular item you may request a Binding Ruling. You may also receive guidance by calling your local Customs and Border Patrol Port.”
Classification: Here are links to Classification sources at the Customs and Border Protection.
Ports Directory: This link provides a list of 317 Customs ports of entry by state. There are many individuals who can assist with classification of your imports.
Customs Rulings: This is a searchable database that provides links to official Memoranda of Customs Rulings for individual products. The product you have may have been classified in this manner, saving a lot of time and effort.