Each executive branch agency has an Inspector General. The primary responsibilities of the Inspectors General are to detect and prevent fraud, waste, abuse, and violations of law and to promote economy, efficiency and effectiveness in the operations of the Federal Government.
Inspectors General issue special and/or annual reports. Check agencies' websites or do a keyword search in the catalog for authors with the phrase "inspector general".
Congress holds investigative hearings. Search ProQuest Congressional to locate them. Results of investigations may result in reports. Search Catalog of U.S. Government Publications (CGP) or the libraries' catalog. If you only know the popular name of the report, try using Popular Names of U.S. Government Reports Case Docs Reference J83 .L52 1984 to determine the official title of the report.
Other places to look
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