All government agencies have their own office of "Inspector General" but the FBI would likely be the lead agency in investigating crimes against the Federal government in general. However, there are many agencies that have their own law enforcement arms (BATF - IRS - ICE - Dept of Interior - FAA - USPS - etc - etc) so it is difficult to answer this question with any specificity. The responsibility for prosecuting any such crimes would fall to the US Attorney's Office.
Question needs to be more specific. There are several federal law enforcement agencies that could be involved depending on the crime and the agency.
The post office is a federal agency. It is written in the constitution that America will have a post office. It will always be a federal offense to tamper with mail or a mailbox.
Contact the U.S. Copyright Office. It is an agency of the Federal Government.
office of management and budget
office of management and budget (OMB)
The U.S. Office of Consumer Affairs (Department of Health and Human Services)
The oldest federal agency in the U.S.A is the U.S. Marshals Office Provided by Jamason Wells W.T.I. Florida
Since the Government Accountability Office (GAO) is a federal agency, the federal government is considered to be the publisher of GAO reports.
No federal agency - but you can contact your local or state Bar Association. They will investigate complaints against attorneys. === === If a crime such as fraud has been committed, then the US Attorney can assist in investigating such matters. The Bar Association and the Disciplinary Commission only advise the attorney of wrong doing, but they do not reprimand unless it is gross misconduct. Start with the Disciplinary in your area, every state has one, then cc to Bar and US Attorney office if necessary.
You would have to contact the Contract Administrator's Office of the particular agency, or facility, that you are asking about in order to determine the answer to this question.
The Office of Management and Budget (OMB) helps the President prepare and administer the Federal Budget.
refer the documents to the foia office at the originating agency for release determination