Inspectors General only have authority to compel current government employees to comply with interview requests under the Inspector General Act, so they are unable to force testimony from officials like Attorney General Loretta Lynch and Assistant Attorney General for Legislative Affairs Peter Kadzik once they leave office along with President Barack Obama, potentially leaving Horowitz to deal with gaping holes in his review.
"Once they’re gone, the IG has no jurisdiction over them," former U.S. Attorney Joe DiGenova told The Daily Caller News Foundation Investigative Group.
Horowitz announced Thursday he is investigating whether DOJ and the FBI broke federal policy in handling the Clinton email investigation in the months leading up to the presidential election.