"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."

"Under questioning from MacMahon, Samit acknowledged that he had told the Justice Department inspector general that "obstructionism, criminal negligence and careerism" on the part of FBI headquarters officials had prevented him from getting a warrant that would have revealed more about Moussaoui's associates. He said that opposition blocked 'a serious opportunity to stop the 9/11 attacks.'"