U.S. Consulate General Hong Kong and Macau - American Citizens Services:
http://hongkong.usconsulate.gov/acs.html

Macao Trade and Investment Promotion Institute (IPIM):
http://www.ipim.gov.mo

Macau Government Tourist Office:
http://www.macautourism.org

Other Macau Government official websites:
http://www.gov.mo/egi/Portal/s/safp/links/index_en.html

U.S. Commercial Service in Hong Kong:
http://www.buyusa.gov/hongkong/en/

United States Department of Agriculture in Hong Kong:
http://www.usda.gov/wps/portal/usdahome