The Terrorist Watch List, Explained

The Terrorist Watch List, Explained
FBI assistant special agent in charge Ron Hopper (C), law enforcement and local community leaders speak during a press conference in Orlando, Fla., on June 12, 2016. Gerardo Mora/Getty Images
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In the aftermath of the Orlando terrorist attack, the fact that Omar Mateen was twice investigated by the FBI has many wondering why he was allowed to purchase firearms and why the FBI wasn’t aware of his plans for terror. Here are the key details about the U.S. terror watch lists and what they do.

What Is the Terrorist Watch List?

The Terrorism Screening Database is the official name for the Terrorist Watch List and is maintained by the FBI’s Terrorist Screening Center. The Terrorism Screening Database is the United States’s central repository of foreign and domestic known and suspected terrorists.

Many now wonder why Orlando gunman Omar Mateen, twice investigated by the FBI, was allowed to purchase firearms.