An IKONOS satellite image of a facility near Kabul, Afghanistan, on July 17, 2003, shows what is reportedly the largest CIA covert prison in Afghanistan, code-named the Salt Pit. Reuters/Landov hide caption

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Senate intelligence committee chairwoman Sen. Dianne Feinstein, D-Calif., is again defending her report on CIA torture methods, which was set to be released this week. J. Scott Applewhite/AP hide caption

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A detainee is escorted in March 2002 by two Army military police at Guantanamo Bay, Cuba. The detainee was being led to the Joint Interrogation Facility to be interviewed by government investigators. Peter Muhly/AFP/Getty Images hide caption

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Senate Intelligence Committee Chairwoman Dianne Feinstein alleged in March that the CIA violated federal law by searching computers used by her staff. On Thursday, the Justice Department declined to bring criminal charges against anyone at the CIA or the Senate panel. Jim Lo Scalzo/EPA/Landov hide caption

itoggle caption Jim Lo Scalzo/EPA/Landov

Senate Intelligence Committee Chairwoman Dianne Feinstein, D-Calif., speaks after a closed-door meeting Thursday on Capitol Hill. The panel voted to approve declassifying part of a report on Bush-era interrogations of terrorism suspects. Molly Riley/AP hide caption

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Demonstrators hold signs supporting Edward Snowden in New York's Union Square Park, on Monday. Snowden, who says he worked as a contractor at the National Security Agency and the CIA, gave classified documents to reporters, making public two sweeping U.S. surveillance programs and touching off a national debate on privacy versus security. Richard Drew/AP hide caption

itoggle caption Richard Drew/AP