Issa appears to want to move on developing the case.
The goal is criminal prosecutions.
Having Congressmen ask great questions and get a plea the 5th answer would make a lot of implied guilt TV moments, but would not help very much in getting to the ultimate resolution.
Also, with Dems saying this is all a political show, its not wise, IMHO, to use up political capital pushing this today.
The public now saw a real demonstration that Issa is NOT pursuing a political show for its own sake.
You no testify ? Next !
There can be backroom negotiations to offer her immunity, there are certainly others being pursued right now which will yield damning evidence.
This investigation only has until Obamas term ends, the clock is ticking.
And we want to get all the real guilty people to take the fall, as much as possible, starting from the top down.
I know it *cant* happen, but I want to see impeachment or least big gains by the TEA party wing of the party.