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Our Latest Organizational Assessment Is Here

The OIG promotes good government through fair, objective, and neutral oversight. Read highlights of some of our most significant accomplishments in the past year.

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Audits, Inspections, and Evaluations Oversight Plan for 2026

Using a risk-based, tiered approach in developing this work plan to best focus our resources, AIE will initiate work in nine risk areas in 2026, including oversight of supplemental funding provided to DOI.

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Semiannual Report to Congress

This report highlights OIG’s work from April 1, 2025, to September 30, 2025.

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Whistleblower Protection

Federal laws protect whistleblowers from reprisal for disclosing waste, fraud, abuse, and danger to public health and safety. Learn more about whistleblower protections for DOI employees, contractors, and grantees, as well as how to file a whistleblower reprisal complaint.

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Infrastructure Oversight

Congress provided more than $34 billion to U.S. Department of the Interior programs through the Infrastructure, Investment, and Jobs Act (IIJA) and the Inflation Reduction Act (IRA). The IIJA and IRA also provided resources to this office.

With fair, objective, and independent oversight, we are helping to safeguard these funds from fraud, waste, and abuse.

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RECENT REPORTS

Issue Areas

U.S. Capitol Dome at night
Congress provided the OIG almost $100 million in the Infrastructure, Investment, and Jobs Act (IIJA) and $10 million in the Inflation Reduction Act (IRA) to oversee the DOI’s management of these funds. Learn how we are helping to safeguard these funds from fraud, waste, and abuse.
Responsibility to Native Americans
The Bureau of Indian Affairs and the Bureau of Indian Education provide services to 574 federally recognized tribes with a population of about 1.9 million American Indians and Alaska Natives. OIG oversight helps prevent fraud and mismanagement that diverts funds from those in need.
Financial Management
DOI has significant financial assets, including contracts, financial assistance awards (grants and cooperative agreements), property, and other resources. Within this broad area, we prioritize oversight work on grants and contracts, CARES Act, and spending under the Great American Outdoors Act.

OIG In The News

Mother and Daughter Sentenced to Federal Prison For Defrauding the CNMI Public School System
Press Release

SAIPAN, CNMI – SHAWN N. ANDERSON, United States Attorney for the Districts of Guam and the Northern Mariana Islands, announced that on May 6, 2026, the Honorable Ramona V. Manglona sentenced a mother and her daughter in the United States District Court for the Northern Mariana Islands for their roles in a procurement fraud and money laundering scheme targeting the CNMI Public School System (…

Former National Park Service employee pleads guilty to overtime wage theft
Press Release

ROME, Ga. - Donny Campbell, a former maintenance department employee at the Chickamauga and Chattanooga National Military Park, has pleaded guilty to theft of government funds for submitting false overtime entries on his timesheets.

“Federal employees are expected to be responsible stewards of taxpayer money,” said U.S. Attorney Theodore S. Hertzberg. “When they abuse that trust, it…