Every year, lawmakers comb through federal spending for waste, fraud and abuse – and funding tied to the United Nations often lands squarely in the crosshairs.
What gets lost in those debates is this: many of the UN’s accountability mechanisms exist largely because the United States helped build them.
Since the organization’s founding, Washington has played a central role in shaping the UN’s oversight architecture – from internal watchdogs and independent auditors to budget committees and investigative bodies examining everything from procurement to peacekeeping conduct.
So when the UN comes up in the next oversight hearing, remember: the system under scrutiny is one the U.S. helped create and continues to shape.
So grab your abacus and join us on the audit trail to see how it all works. (And fair warning: this may get complicated.)
The UN’s Internal Watchdog
At the heart of the UN’s oversight structure is the Office of Internal Oversight Services (OIOS) – the organization’s inspector general.
Established in 1994 amid calls for stronger accountability, OIOS investigates allegations of fraud, corruption and misconduct across the UN system. Its staff conduct audits, inspections and investigations designed to uncover inefficiencies or wrongdoing within UN operations worldwide.
The office’s work is reviewed by the General Assembly’s Independent Audit Advisory Committee, a body of experts appointed by Member States to evaluate the effectiveness of the UN’s oversight systems.
Washington has consistently pushed to expand OIOS’s investigative role. That why the UN’s 2026 regular budget, adopted by the GA last December, includes provisions supported by the U.S. directing OIOS to prioritize cases that could lead to disciplinary action or significant financial recovery.
“As we continue to reform the UN, we expect OIOS to support our efforts to make the UN more accountable, transparent and efficient.”
Jeff Bartos, U.S. Ambassador for Management and Reform
Budget Oversight
Unlike many international organizations, the UN doesn’t control its own purse strings.
Member States maintain direct authority over the UN’s finances through the GA’s Fifth Committee, which handles administrative and budgetary matters. The committee reviews spending proposals, approves major expenditures and debates management reforms that shape how the organization operates.
Supporting that work is the Advisory Committee on Administrative and Budgetary Questions (ACABQ), a technical body within the Fifth Committee that evaluates UN financial management and provides recommendations to Member States.
The U.S. plays an active role in both forums through its diplomatic mission in New York (colloquially known as U.S.-UN). American Stephani Laura Scheer currently serves on the ACABQ, giving Washington direct participation in shaping how the UN manages its finances and administrative practices.
Many of the UN’s accountability mechanisms exist largely because the United States helped build them… from internal watchdogs and independent auditors to budget committees and investigative bodies.
External Audits and Systemwide Reviews
Then there are independent external audits.
The UN Board of Auditors, established in 1946, conducts professional audits of the organization’s accounts and financial procedures. Its mandate spans the entire UN system, examining accounting systems, internal controls and management practices in accordance with international auditing standards.
Another important body is the Joint Inspection Unit (JIU), which (again, independently) evaluates operations across the broader UN family of organizations (which includes more than 30 programs, funds and agencies like UNICEF and the World Food Programme).
While internal auditors often focus on individual programs, JIU examines systemic challenges like procurement and reform that impact more than one or two projects. Each year, JIU produces reports aimed at improving efficiency, coordination and accountability across the system.
Taken together, these institutions form a layered oversight structure combining internal investigations, external audits and direct supervision by Member States.
Accountability in Peacekeeping
Oversight at the UN extends far beyond financial management.
In recent years, one of the most sensitive challenges facing the organization has been allegations of sexual exploitation and abuse by personnel serving in peacekeeping operations.
In 2016, the Security Council adopted Resolution 2272, championed by Washington, granting the Secretary-General authority to repatriate entire military or police units when credible evidence emerges of widespread or systematic abuse.
That authority has been used in missions such as the Central African Republic, where troops from several countries were sent home following serious allegations.
Transparency has also increased significantly. The UN maintains a publicly accessible database documenting credible allegations of sexual exploitation and abuse in field missions. The system identifies the nationality of accused personnel and tracks the progress of investigations in an effort aimed at holding troop-contributing countries accountable for the conduct of their forces.
It’s important to note that peacekeepers remain under the legal jurisdiction of their home countries, so governments are responsible for prosecutions. To strengthen investigations, troop-contributing countries must deploy trained National Investigation Officers who work alongside UN officials to examine allegations in the field.
At the same time, the UN has expanded support for victims.
A global network of victims’ rights advocates now operates both at UN headquarters and in field missions to help survivors safely report abuse and access assistance.
Complementing that effort is a UN trust fund that finances services such as medical care, psychosocial support, legal assistance and vocational training for victims and affected communities.
The fund is partially financed through reimbursements withheld from troop-contributing countries when allegations against their personnel are substantiated. In 2023 alone, projects supported through the fund assisted more than 1,600 victims.
The UN has expanded support for victims. In 2023 alone, a UN trust fund for survivors of sexual assault assisted more than 1,600 victims.
U.S. Oversight
Formal watchdog bodies are only part of the accountability picture. The U.S. also exercises oversight through direct engagement with UN agencies receiving American funding.
Each UN entity that receives U.S. contributions maintains regular reporting relationships with relevant American government departments, including the State Department and other funding agencies. These relationships involve financial reporting and program reviews.
Combined with Washington’s role in budget negotiations and oversight committees, these channels give the U.S. substantial visibility into UN operations.
Each UN entity that receives U.S. contributions maintains regular reporting relationships with relevant American government departments. Combined with Washington’s role in budget negotiations and oversight committees, these channels give the U.S. substantial visibility into UN operations.
A System Built for Scrutiny
The UN is not beyond criticism, and its oversight systems – like those in any large bureaucracy – are imperfect and evolving. But the organization operates under multiple layers of scrutiny, from internal investigators to independent auditors and oversight by Member States.
It’s worth remembering that much of that accountability architecture exists because the U.S. pushed to build it.
