Are all telephone calls recorded and accessible to the US government?

Click here to access article by Glenn Greenwald from The Guardian.

The real capabilities and behavior of the US surveillance state are almost entirely unknown to the American public because, like most things of significance done by the US government, it operates behind an impenetrable wall of secrecy. But a seemingly spontaneous admission this week by a former FBI counterterrorism agent provides a rather startling acknowledgment of just how vast and invasive these surveillance activities are.