As an al-Qaeda millennium plot is broken up in Jordan (see November 30, 1999), attention is focused on the fact that two of the plotters were long time US residents. National Security Adviser Sandy Berger sends a memo to President Clinton about the two men, Raed Hijazi and Khalil Deek. Hijazi had lived in California and then moved to Boston to drive a taxi there for several years. The 9/11 Commission will say Berger tells Clinton was a naturalized US citizen who had “been in touch with extremists in the United States as well as abroad.” Later in the month, counterterrorism “tsar” Richard Clarke will warn Berger in an e-mail, “Foreign terrorist sleeper cells are present in the US and attacks in the US are likely.” [9/11 Commission, 7/24/2004, pp. 179, 501] Deek is arrested on December 11 (see December 11, 1999), but he will eventually be released without being charged (see May 2001). A few days later, Clarke authorizes a study that looks into Deek’s connections, but no action will be taken when it is discovered Deek’s next-door neighbor is still living in Anaheim, California, and running an al-Qaeda sleeper cell there (see December 14-25, 1999). Similarly, while Hijazi will be arrested overseas some months later (see September 2000), US intelligence seems oblivious to the other al-Qaeda operatives who have been his roommates and fellow taxi drivers in Boston (see June 1995-Early 1999 and October 2000). One of them, Nabil al-Marabh, will apparently go on to have a major role in the 9/11 plot (see for example January 2001-Summer 2001 and Early September 2001). Investigators will also fail to act on knowledge of financial transactions between Hijazi and three of the 9/11 hijackers (see Spring 2001).