The Department of Homeland Security’s U.S. Visitor and Immigrant Status Indicator Technology (US-VISIT) program has helped prevent “criminal aliens from entering the country”, but is not yet integrated with other border security measures and lacks an effective exit tracking system, according to a senior official at the Government Accountability Office (GAO). Testifying before the Senate Appropriations Subcommittee on Homeland Security yesterday, Randy Hite, Director of Information Technology Architecture and Systems Issues at GAO, noted that while the US-VISIT program has met several demanding legislatively mandates, other key elements of the tracking system need improvement.