The United States has formally withdrawn from the World Health Organization, ending over seven decades of membership on Thursday, January 22, 2026.
The exit follows a one-year notice period triggered by an executive order signed by President Donald Trump on his first day in office in 2025.
The decision removes the U.S., long the WHO’s largest financial backer, from a leading role in coordinating global disease monitoring, outbreak response, and health system support.
U.S. contributions made up roughly 18 percent of the organization’s budget. Officials cited concerns about the WHO’s handling of past health emergencies and slow reform efforts, and the U.S. has also suspended future funding and personnel involvement.
Questions remain over compliance with U.S. law, which requires member states to settle outstanding dues before a withdrawal is complete.
Reports indicate the country still owes substantial payments for the 2024–2025 period.
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WHO Director-General Tedros Adhanom Ghebreyesus described the departure as a setback for both the U.S. and the international community, warning it could weaken global preparedness for disease outbreaks and hinder efforts to combat illnesses such as tuberculosis, HIV/AIDS, and future pandemics.
While some officials framed the move as a demonstration of national sovereignty and financial accountability, critics say it isolates the U.S. from vital global health discussions.
The WHO has already adjusted its programs and staffing in response to the loss of U.S. support, with other member states expected to shoulder additional financial responsibility.
Observers are watching closely for the long-term impact on global health security and the U.S.’s influence in international health policy.