U.S. Customs and Border Protection (CBP) apprehended and subsequently released a migrant without providing information requested by the Federal Bureau of Investigation’s Terrorist Screening Center (TSC) that would have confirmed the migrant was a positive match with the Terrorist Screening Data Set (Terrorist Watchlist). This occurred because CBP’s ineffective
practices and processes for resolving inconclusive matches with the Terrorist Watchlist led to multiple mistakes. This evaluation was conducted to review CBP’s screen process of a suspected terrorist. Three recommendations were made.