[SMARTY]

Boehner: White House kept prisoner trade secret because Congress opposed it

Then WHY didn't Congress expose it?

They are culpable TOO, if they were aware of his intention and did nothing.

[AU72]

Then WHY didn't Congress expose it?

For sure. Anybody in the know, and that means you Boehner, could have leaked the story, created a firestorm, forcing the WH to deny it and probably dooming the deal.