It is my understanding that the IG hands over what he learns to US Attorney Huber out in Utah, who can convene Grand Juries and indict the bad guys where appropriate.
“make recommendations”
...“These senior prosecutors will report directly to the Attorney General and the Deputy Attorney General [Rod Rosenstein], as appropriate, and will make recommendations as to whether any matters not currently under investigation should be opened, whether any matters currently under investigation require further resources, or whether any matters merit the appointment of a Special Counsel.”
Sessions revealed Thursday in the letter to top Republican lawmakers in both chambers of Congress that Huber was the senior federal prosecutor leading that effort...
And the results so far? ZIP. Heck, most of these folks still work at DOJ/FBI, still have their clearances, etc. Nothing is happening.