Richard Blumenthal actually said...

I called for a criminal investigation by the Department of Justice with great reluctance and regret.

I think one of the unexplored areas here has been the potential for retaliation against whistleblowers.

I have found that there simply have been no answers to some of the questions that I have posed in letters to the agency

I would like a commitment from you that the agency will respond to my inquiries in writing as soon as you are able to do so