Mark Greenblatt

Mark Lee Greenblatt is an American attorney and government official who had served as the Inspector General of the United States Department of the Interior. As the Department's 7th confirmed Inspector General, Mr. Greenblatt oversaw a nationwide workforce of more than 300 investigators, auditors, evaluators, attorneys, and support staff whose mission is to detect and deter waste, fraud, abuse, and misconduct in DOI programs, and to promote economy and efficiency in Departmental operations. Mr. Greenblatt was the senior official responsible for providing oversight of more than 70,000 Department employees, assessing the Department's diverse programs with more than $10 billion in grants and contracts, and conducting complex administrative and criminal investigations.

On January 24, 2025 President Donald Trump fired Mr. Greenblatt along with several other inspectors general.

Education Greenblatt received his A.B., with distinction, from Duke University. He received his J.D. from Columbia Law School, where he was a Harlan Fiske Stone Scholar. Greenblatt was a Senior Managers in Government Fellow at the John F. Kennedy School of Government at Harvard University.

He is also a Certified Fraud Examiner and graduated from the Experienced Leader Program at American University sponsored by the Council of Inspectors General on Integrity and Efficiency. For instance, he led the Subcommittee's investigation into waste, fraud, and abuse in the United Nations' Oil-for-Food Program, a $64-billion operation involving numerous complex international transactions. but the vote was never taken up by the Senate. On January 17, 2019, Greenblatt was nominated by President Donald Trump to be Inspector General of the Department of the United States Department of the Interior, and on August 1, 2019, the Senate confirmed his nomination by voice vote.

On June 9, 2021, the Office of the Inspector General issued a report titled "Review of U.S. Park Police Actions at Lafayette Park", concerning the police actions in Lafayette Square of June 1, 2020. The report said, "The evidence we obtained did not support a finding that the USPP cleared the park to allow the President to survey the damage and walk to St. John's Church. Instead, the evidence we reviewed showed that the USPP cleared the park to allow the contractor to safely install the antiscale fencing in response to destruction of property and injury to officers occurring on May 30 and 31." The report claimed that the decision to clear Lafayette Park had been made two days earlier, on May 30. The Inspector General's report raised some media skepticism. For example, The Daily Beast characterized as "bizarre" the claim that the purpose of clearing Lafayette Square was to enable the construction of the fence.

On January 24, 2025 President Donald Trump fired Mr. Greenblatt along with several other inspectors general. In response, Hannibal "Mike" Ware, the chair of the Council of the Inspectors General on Integrity and Efficiency (CIGIE), pointed out the lack of legal standing of the removals, as notification to Congress 30 days in advance is required by law. While President Trump had stated his intent and reasons why to fire many of the IG, back in November 2024, it appears that Congress was not notified as required.

Publications Greenblatt authored a book, Valor: Unsung Heroes From Iraq, Afghanistan, and the Home Front, which was published by Rowman & Littlefield Publishing Group in 2014. Valor was a finalist for the 2016 William E. Colby Award for military writing. The book was endorsed by numerous military figures, including Gen. David Petraeus, Gen. John R. Allen, and three Medal of Honor recipients.

Following the publication of Valor, Greenblatt authored or co-authored more than a dozen articles, interviews, and book reviews, largely on the topic of military heroism, for Military.com, Task & Purpose, Soldier of Fortune, Real Clear Defense, and other publications.