US Government

Bureau of the Census
Bureau of Export Administration (BXA)
Commerce Department
Customs Service (USCS)
Federal Register
International Trade Administration (ITA)
International Trade Data System (ITDS)
Government Accounting Office (GAO)
State Department
THOMAS
Treasury Department
US Court of International Trade (CIT)
US House of Representatives
US International Trade Commission (USITC)
USITC Interactive Tariff Database
US Trade Representative (USTR)
US Senate
White House

Foreign Governments

Canada Customs and Revenue Agency
Canada Export and Import Control Bureau
Revenue Canada

Multinational Organizations