U. S. International Trade Commission
The Commission furnishes studies, reports, and recommendations involving international trade and tariffs to the President, the Congress, and other Government agencies. In this capacity, the Commission conducts a variety of investigations, public hearings, and research projects pertaining to the international trade policies of the United States.
U. S. Department of Commerce - International Trade Administration features an "Advocacy Center" to assist with questions, information, etc.
Joint Economic Committee - U. S. Senate economic news and links.
U. S. Trade Representative "Other Trade and Information Resources."
Government Information Sharing Project statistics provided by the Bureau of the Census, Bureau of Economic Analysis, the National Center for Education Statistics, and The MESA Group.
International Trade Data System addresses International Trade Data System and NATAP trade sites.