Glenn Greenwald in April, arriving in the U.S. for the first time since documents were disclosed to him by former intelligence analyst Edward Snowden. Stan Honda/AFP/Getty Images hide caption

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Glenn Greenwald, left, and David Miranda after Miranda's arrival at Rio de Janeiro's International Airport on Aug. 19, 2013. Miranda had been detained for nine hours at London's Heathrow Airport. Authorities questioned him about Greenwald's reporting of the "NSA leaks." Ricardo Moraes /Reuters/Landov hide caption

itoggle caption Ricardo Moraes /Reuters/Landov

Edward Snowden, seen during a video interview with The Guardian. Glenn Greenwald/Laura Poitras /EPA/LANDOV hide caption

itoggle caption Glenn Greenwald/Laura Poitras /EPA/LANDOV

Reporter Glenn Greenwald, who became famous reporting on NSA contractor Edward Snowden's disclosure of the NSA's government surveillance programs, is leaving the Guardian to form a new media company with eBay founder Pierre Omidyar. Vincent Yu/AP hide caption

itoggle caption Vincent Yu/AP

Glenn Greenwald (left) and David Miranda after Miranda's arrival early Monday at Rio de Janeiro's International Airport. Miranda had been detained for 9 hours at London's Heathrow Airport. Authorities reportedly questioned him about Greenwald's reporting of the "NSA leaks." Ricardo Moraes /Reuters/Landov hide caption

itoggle caption Ricardo Moraes /Reuters/Landov