WASHINGTON (CNN) -- Federal agents found much of the information produced by the Bush administration's top-secret warrantless surveillance program vague and difficult to use, a sweeping review of the program found. Former President Bush claims his administration's surveillance program helped to ward off terrorist attacks. Then-President George Bush and other top administration officials have said the program was a critical tool in preventing terrorist attacks. However, a report Friday by the inspectors general of the CIA, the Justice Department, the Pentagon and other agencies found that some FBI and CIA agents were frustrated by the secrecy surrounding the program. Former CIA chiefs Michael Hayden and Porter Goss told investigators the wiretaps filled a gap in U.S. intelligence. One senior official quoted in the report called the wiretaps, dubbed the "President's Surveillance Program" by the report, "a key resource," while the FBI considered it "one tool of many" in their efforts to head off terrorist plots, the report states.
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Audit: Info from Bush's surveillance program found to be vague
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Program allowed for top-secret, warrantless wiretaps
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Bush, other former administration officials have touted program's success
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Review concluded program was built on "factually flawed" legal analysis
The report also confirmed that the @placeholder was not limited to the electronic intercepts, referring repeatedly to "other intelligence activities" that remain classified.