Airport Status - FAA Airport Delays and Closures
http://www.fly.faa.gov/flyfaa/usmap.jsp

U.S. Customs - US Customs News, Decisions, Regulations and Contacts
http://www.customs.ustreas.gov/

Schedule B - US Census Bureau Data, Statistics and Schedule B numbers
http://www.census.gov/foreign-trade/

USCIB - US Council for International Business
http://www.uscib.org/

Weather - NOAA: Weather in the US
http://www.nws.noaa.gov/

Department of Transportation
http://www.dot.gov/

Transportation Security Administration (TSA)
http://www.tsa.gov/