Published on Dec 10, 2013
provided by cnnnext.com
Technology giants in the US have written an open letter to President Obama urging him to make tighter controls on surveillance.
The spying scandal involving the US National Security Agency was revealed after documents were leaked by the whistleblower Edward Snowden.The firms are worried public suspicion could affect their profits.Al Jazeera's Shihab Rittansi reports from Washington.
