The FBI agent who arrested Zacarias Moussaoui in August 2001 testified Monday he spent almost four weeks trying to warn U.S. officials about the radical Islamic student pilot but criminal negligence" by superiors in Washington thwarted a chance to stop the 9/11 attacks. Samit told MacMahon he couldn't persuade FBI headquarters or the Justice Department to take his fears seriously. Samit's complaints echoed those raised in 2002 by Coleen Rowley, the bureau's agent-lawyer in the Minneapolis office. Rowley went public with her frustrations, was named a Time magazine person of the year for whistleblowing. Samit revealed far more than Rowley of the details of the investigation. For each nugget of information, MacMahon asked Samit if Washington officials called to assess the implications. Time after time, Samit said no.

"