The email issue arose from a FOIA request from Judicial Watch as I recall.
I don't know that any (And I could be wrong) criminal information has been uncovered by this committee.
As for the legitimate role of oversight, I think they accomplished that long ago when they discovered Clinton was negligent on security requests, and she lied about the Video.
May be....just nay be....and I hope my hunch is right....
Howdy Gowdy is playing chess thinking 3 moves ahead.
If Hillary is dislodged in October 2015, by finding criminal wrong doings, what happen next?
Move # 1 : Biden jumps in.
Move # 2 : Biden has no known criminal shenanigans like Hillary. He will bring out every democrat & liberal to the voting booth. He has better chance than Hillary to win in November.
Move # 3 : Gowdy exposes Hillary’s crimes after it is too late for Biden to jump in...let us say after March 1st.
Checkmate! Now it is either...
Trump versus known criminal Hillary -or-
Trump versus Bernie Sanders in November.
I am a lifelong chess player. I always try to think 3 moves ahead.