Sources

U.S. Department of Commerce (DOC), International Trade Administration (ITA). Preliminary International Travel receipts Analysis for 2004, available at: tinet.ita.doc.gov/view/a-2004-402/index.html as of October 2005.

U.S. Department of Commerce (DOC), International Trade Administration (ITA). 2004 Profile of Overseas Traveler to the U.S.–Inbound reported from: Survey of International Air Travelers, available at: tinet.ita.doc.gov/view/f-2004-07-001/index.html as of October 2005.

U.S. Department of Commerce (DOC), International Trade Administration (ITA). 2004 Profile of U.S. resident Traveler Visiting Overseas Destinations reported from: Survey of International Air Travelers, available at : tinet.ita.doc.gov/view/f-2004-101-001/index.html as of October 2005.

U.S. Department of Homeland Security (USDHS), Office of the Inspector General (OIG). 2004. A Review of the Secure Electronic Network for Travelers Rapid Inspection Program, OIG-04-14. Washington, D.C. April.

U.S. Department of Homeland Security (USDHS), Office of the Inspector General (OIG). 2005. Implementation of the United States Visitor and Immigrant Status Indicator Technology Program and Land Border Ports of Entry, OIG-05-11. Washington, D.C. February.

U.S. Department of Transportation (USDOT), Research and Innovative Technology Administration (RITA), Bureau of Transportation Statistics (BTS). 2005 Special tabulations. Washington, D.C. Based on data from: U.S. Department of Homeland Security, Customs and Border Protection, Office of Field Operations, Operations Management Database as of December 2004.