[drenei]

Quis custodiet ipsos custodes?

There is something verifying and controlling what the watchers do (http://en.wikipedia.org/wiki/United_States_Foreign_Intellige...). The problem is, that system hasn't been effective at stopping the abuses some of us would like stopped.

[conanite]

It's nice how the ancient Romans had an appreciation of the problem of infinite recursion. Suppose there was an independent institution overseeing the US FISC. Who would watch that? And so on. Is there a solution to Quis custodiet ...? Perhaps a multi-pronged separation-of-powers approach, but that hasn't worked out in practice, either.

[Amadou]

Is there a solution to Quis custodiet ...?

Yes. It is oversight by the public at large.