The Justice Department’s Office of Intelligence Policy and Review (OIPR), which helps obtain warrants under the Foreign Intelligence Surveillance Act (FISA), discovers errors in several al-Qaeda related FISA applications under a counterterrorist program called “Catcher’s Mitt.” The OIPR verbally notifies the FISA Court of the errors, which are mostly in affidavits submitted by supervisory special agents at field offices. Then, in September and October 2000, the OIPR submits two pleadings to the court regarding approximately 75-100 applications with errors starting in July 1997. Many of the errors concern misleading statements about the nature of collaboration between criminal and intelligence agents. Most of these applications stated that the FBI New York field office, where the I-49 squad focusing on al-Qaeda was based (see January 1996 and Late 1998-Early 2002), had separate teams of agents handling criminal and intelligence investigations. But in actual fact the I-49 agents intermingled with criminal agents working on intelligence cases and intelligence agents working on criminal cases. Therefore, contrary to what the FISA Court has been told, agents working on a criminal investigation have had unrestricted access to information from a parallel intelligence investigation—a violation of the so-called “wall,” the set of bureaucratic procedures designed to separate criminal and intelligence investigations (see July 19, 1995). [Newsweek, 5/27/2002; Newsweek, 3/29/2004; US Department of Justice, 11/2004, pp. 36-37 ] The information about al-Qaeda in these cases is also shared with assistant US attorneys without FISA permission being sought or granted first. Other errors include the FBI director wrongly asserting that the target of a FISA application was not under criminal investigation, omissions of material facts about a prior relationship between the FBI and a target, and an interview of a target by an assistant US attorney. [Foreign Intelligence Surveillance Court, 5/17/2002] This leads the FISA Court to impose new requirements regarding the “wall” (see October 2000). Similar problems will be found in FISA applications for surveillance of Hamas operatives (see March 2001).