** FILE ** A TV screen shows a news report of Edward Snowden, a former National Security Agency contractor who leaked top-secret documents about sweeping U.S. surveillance programs, at a shopping mall in Hong Kong Sunday, June 23, 2013. (AP Photo/Vincent Yu)

** FILE ** A TV screen shows a news report of Edward Snowden, a former National Security Agency contractor who leaked top-secret documents about sweeping U.S. surveillance programs, at a shopping mall in Hong Kong Sunday, June 23, 2013. (AP Photo/Vincent Yu)