An independent oversight board tasked with reviewing the National Security Agency's surveillance program has concluded the bulk collections of data is illegal and should end.
Moreover, the board says, the NSA's bulk phone data collection program has been largely useless in thwarting terrorism.
"We have not identified a single instance involving a threat to the United States in which the program made a concrete difference in the outcome of a counterterrorism investigation," the board wrote in the report released Thursday.
The board said it had identified only one instance in which the program helped authorities identify a terrorist in the last seven years. But the board said law enforcement would have found the suspect anyway, even without the NSA program.
The board doesn't have any legal teeth, so its recommendations won't change government practices the way a court ruling might.
OutFront: Joining me now, Jesselyn Radack is a Legal Adviser to former NSA Contractor Edward Snowden; and Jeffrey Toobin is CNN's Senior Legal Analyst.