That's the question that's long swirled around former U.S. Rep. Paul Broun, especially after he stepped up to challenge Gainesville Republican Doug Collins for his Ninth District congressional seat in the May 24 primary.

We took a deep dive into the indictment federal prosecutors secured last month to charge Broun's former chief of staff, looking for clues about whether the Justice Department's corruption investigation will stop there or engulf the four-term congressman.

The central question is how much Broun knew and whether he was involved in discussions to cover up the role Republican consultant Brett O'Donnell had with his office and campaigns.

Read more about what we found and what Broun says about the most recent action in the case.