From AllGov:

The Department of Homeland Security (DHS) went three years without an inspector general before John Roth, who had led the Food and Drug Administration’s office of criminal investigations, was confirmed by the Senate on March 6…Inspectors general are expected to audit the department or agency for which they work for examples of fraud, waste, mismanagement and general incompetence. The Homeland Security inspector general post was unfilled for 1,134 days before Roth was confirmed.