[glennaro]

Let's boil this down to the likely outcome and save a lot of time:

Issa: "Lerner's going to testify!"
Lerner: "No, I'm not!"
Issa: "OK."

[Hardastarboard]

Issa is starting to look like an alcoholic dad sitting on the couch yelling at two bratty sons fighting, over and over, and never actually getting off the couch to do something about it.