The United State's International Trade Commission (USITC) Interactive Tariff and Trade DataWeb provides international trade statistics and U.S. tariff data to the public, free of charge. Other useful information available through this resource includes U.S. import statistics, export statistics, tariffs, future tariffs, and tariff preference information. In addition, the site provides information by classification systems and trade data reports. A free registration is required in order to access the data.