How do you know they aren't playing Lincoln to your Thaddeus Stevens?
I do appreciate the strategic thinking behind your suggestion that Snowden or Greenwald may eventually reveal what they are obliquely referring to. My personal opinion is that Greenwald led with his strongest story -- I don't think they have much more. But I have nothing to back that up. But clearly Wyden and Udall have a whole lot more.
In the end, I'm the type of person who believes that their oath to the constitution supercedes any strategic concerns.
"In the end, I'm the type of person who believes that their oath to the constitution supercedes any strategic concerns."
What if they think the best way to defend the Constitution is to behave strategically and marshall their power for the best possible outcome. That seems reasonable to me.