U.S. Screens Travelers with "VISIT" Program Federal officials begin using a new system to identify visitors to the United States at airports and other entry points. The new "Visitor and Immigrant Status Indicator Technology," to be used at 14 seaports and 115 American airports, will match photos and fingerprints with a variety of databases. Some nations are already protesting the system, which is expected to lengthen processing time. NPR's Pam Fessler reports.