There are only two such surviving Investigative American Journalists – everyone else is a ‘hand-out’ (or even ‘press kit’) re-typist. There names are Nick Shirley and James O’Keefe.
They are both under threat of governmental incarceration for their work.
The third Investigative American Journalist died in foreign government custody just a few years ago. You can read about him in the Helsinki Times via the following link:
The tragic end of Gonzalo Lira: A voice silenced in Ukraine