A brief overview of the U.S. Department of Commerce's Office of Trade Agreements Negotiations and Compliance (TANC) This information is taken from "A Basic Guide to Exporting" provided by the U.S. Commercial Service to assist U.S. companies in exporting.
Last Published: 8/8/2017
About the Office of Trade Agreements Negotiations and Compliance (TANC)
The U.S. Department of Commerce’s Office of Trade Agreements Negotiations and Compliance (TANC) ensure foreign compliance with international trade agreements. Part of DOC’s International Trade Administration, TANC (through the Trade Agreements Compliance Program) systematically monitors, investigates, and evaluates foreign government compliance with our international trade agreements.
(The Office of Trade Agreements Negotiations and Compliance (TANC)

U.S. One Stop Shop for Reducing/Eliminating Trade Barriers
This free program is available to assist all U.S. exporters or investors facing trade barriers, but it is particularly valuable to small and medium-sized companies, which often lack the resources or expertise to deal with these problems alone. It is the U.S. government’s one-stop shop for getting help to reduce or eliminate those barriers.

Searchable Database on International Trade Agreements
The TANC website includes a fully searchable database containing the texts of approximately 250 international trade agreements. To assist, TANC provides examples of the most common foreign government imposed trade barriers link to Foreign Trade Barrier Examples.

This service enables U.S. exporters to file complaints about foreign government-imposed trade barriers or unfair trade situations in foreign markets.
For a U.S. company bidding on a foreign government procurement contract, exporting can mean more than just selling a good product at a competitive price. It can also mean dealing with complex rules

Negotiation Trade Agreements