The fact that Clapper is still in office months after it was revealed that he had in point of fact lied to congress during sworn testimony should tell you everything you need to know. The surveillance machinery formerly known as Total Information Awareness is being built and fielded with or without the consent of the governed and most definitely without the consent of those of us who don't happen to be "US Persons".…
It is incredibly simple politics. He is in place to continue to soak up the bad publicity from the Snowden event. Once the bad publicity stops, he will step down. There is no point, politically, of taking him out right now. His replacement will end up tarnished with the bad PR as he starts his gig. http://www.constitution.org/mac/prince00.htm The NSA is unable to do a thorough damage assessment -- they don't know how…
That is the usual way this goes. But we don't yet have the data to determine whether this is what's happening.
The situation may just be an indication that the NSA has joined the old Ma Bell and Italy's Berlusconi in being able to say "we don't care, we don't have to"