Beefed-up American security at border crossings also protects the privacy of innocent people, U.S. Homeland Security Secretary Michael Chertoff told a packed conference of privacy experts yesterday.
Detailing various methods for screening potential terrorists as they appear on America's doorstep, Chertoff said the use of better technology and information-sharing among countries allows border officials to identify threats while letting the vast majority of travellers enter the country with ease.
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