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Offices, Department of Homeland Security, Executive (1 - 2 of 2 items)
Biosurveillance: Preliminary Observations on Department of Homeland Security's Biosurveillance Initiatives
GAO-08-960T: Published: Jul 16, 2008. Publicly Released: Jul 16, 2008.
The United States faces potentially dangerous biological threats that occur naturally or may be the result of a terrorist attack. The Department of Homeland Security (DHS) is developing two major initiatives to provide early detection and warning of biological threats: the National Biosurveillance Integration Center (NBIC), a center for integrating and coordinating information on biological events...
Overstay Tracking: A Key Component of Homeland Security and a Layered Defense
GAO-04-82: Published: May 21, 2004. Publicly Released: Jun 3, 2004.
Each year, millions of visitors, foreign students, and immigrants come to the United States. Foreign visitors may enter on a legal temporary basis--that is, with an authorized period of admission that expires on a specific date--either (1) with temporary visas (generally for tourism, business, or work) or, in some cases, (2) as tourists or business visitors who are allowed to enter without visas....