U.S. Embassy, Phnom Penh: Information about the Embassy, the U.S. Information Service (USIS), the U.S. Agency for International Development (USAID), the Defense Attaché Office (USDAO), and Travel Advisory.

U.S. Commercial Service Bangkok provides coverage for Cambodia

U.S. Department of State (Travel.State.Gov): Consular Information Sheet about policies, requirements, transportation, security etc. when Americans travel to Cambodia.

U.S. Census Bureau: U.S. Trade Balance with Cambodia from 1992 - Present.