Aviation Security: Efforts to Strengthen International Passenger Prescreening are Under Way, but Planning and Implementation Issues Remain

Passenger prescreening--a process that includes matching passengers' identifying information against records extracted from the U.S. government terrorist watch list--is one of several security measures in place to help ensure the safety of commercial flights traveling to or from the United States. DHS has several efforts underway to strengthen international aviation passenger prescreening. This report focuses on certain elements of the passenger prescreening process as well as some of the actions that DHS is taking or has planned to strengthen prescreening procedures. This report is a limited version of the original November 2006 report as various agencies that we reviewed deemed some of the information in the original report to be security sensitive. GAO's work included interviewing officials and assessing relevant documentation from federal agencies, U.S. and foreign air carriers, industry groups, and several foreign countries.