Terrorist Watchlist Checks and Air Passenger Prescreening [Updated September 6, 2006] [open pdf - 95KB]
"Considerable controversy surrounds U.S. air passenger prescreening processes and terrorist watchlist checks. In the past, such controversy centered mainly around diverted international flights and misidentified passengers; however, the recently foiled conspiracy to bomb airliners bound for the United States from the United Kingdom (UK) has raised questions about the adequacy of existing processes to prescreen air passengers against terrorist watchlists. This report examines (1) measures taken in the wake of the 9/11 terrorist attacks to improve terrorist watchlists, (2) U.S. agency efforts underway to better screen air passengers against those watchlists prior to departure (preflight), and (3) possible issues associated with maintaining such watchlists and prescreening air passengers, including the misidentification of persons as terrorists as the result of watchlist checks."
CRS Report for Congress, RL33645