- U.S. International Trade Commission - HTS Online Reference Tool – A chapter-by-chapter listing of HTS Codes and notes.
- HTS Code Searchable Database – A quick-search database of HTS Codes: just input your product and it will give you recommended HTS Codes.
- US Department of Commerce – Denied Persons List - The US Department of Commerce’s Denied Persons List. Contains the complete list, as well as information about complying with trade law.
- US Treasury – Sanctions Programs and Country Information - A guide compiled by the US Treasury, detailing the various embargos levied on different countries.
- US Department of Homeland Security – Trade Compliance Resources - Resources compiled by the Department of Homeland Security, including numerous programs to help importers and exporters stay in compliance of trade law.