U.S. Agency for International Development (Agency responsible for administering U.S. foreign economic assistance programs.)
U.S. Army Corps of Engineers (Compiles waterborne commerce statistics and statistics on vessels in harbors.)
U.S. Geological Survey (Conducts research on U.S., state, and foreign geological trends and developments.)
U.S. International Trade Commission (Independent agency studying the effects of selected imports on U.S. industries and listing U.S. tariff rates.)
USA Facts Nonprofit and nonpartisan resource covering trends in government spending and resources.