Senators like Larry Craig. I'd guess that Weiner and Craig are not unique within congress. And they do have something to hide - their careers likely depend on it (not to mention less important things to them like their marriage). How long do we have before the NSA powers have expanded so much that oversight is not realistic? We may be there but if not, we the people better stop it very soon - it doesn't look like current politicians are moving fast at stopping it and there is a point where it can't be stopped because the NSA won't let it.