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Intel chiefs defend NSA as Congress considers changes

Top national security officials defend the NSA as legislators consider sweeping changes to surveillance law.

Keith Alexander waits for the beginning of a hearing before the House Intelligence Committee October 29, 2013 on Capitol Hill in Washington, DC.
Keith Alexander waits for the beginning of a hearing before the House Intelligence Committee October 29, 2013 on Capitol Hill in Washington, DC.Getty Images

Adam Serwer