Yes, Congress has oversight authority over all of this, but in practice what they've done is assign huge powers to agencies and then just hold PR committee meetings every now and then when they think they can get votes.

As far as I know, the only legislators fully briefed on all of this were the majority/minority leaders. Perhaps the chairmen of the intelligence committees. Perhaps not. Definitely not the entire committee, and definitely not every senator who can appear in front of a microphone.

The real problem here is that Congress has abdicated its power over to agencies ran by the president. This is true in many areas. If things screw up, they can have hearings and look like heroes. If things go well, they can either ignore them or make hay. In either case, nobody really cares what the agencies are doing. It's impossible. There simply too much detail for the legislature to manage. So the rule is: never do anything that will make you appear on TV. This is what the NSA violated.

I'd just be careful you don't throw the baby out with the bath water. Congress has the power, and could use it, to straighten this entire thing out. It's not just all PR stunts. Or how about putting it this way: yes, it's PR stunts, but with enough attention on these stunts, maybe the rest of them will grow the balls necessary to actually do their jobs.

This is a good sign. I hope we see many more "PR stunts" like it.