U.S. homeland security officials are preparing to abandon plans to develop a system to track the departure of foreign visitors at land borders, citing cost and technical obstacles in scaling back a major post-Sept. 11 domestic security initiative, officials said. Launched in 2004, US-VISIT was designed to automate the tracking of visitors upon entry and exit from the United States, using fingerprints and digital photographs to help find criminals, potential terrorists and visitors who illegally overstay. Full Story