DEFUND Act of 2025

The DEFUND Act of 2025 would terminate U.S. membership in the United Nations and all its affiliated bodies, including the World Health Organization, by repealing the legal foundations for U.S. participation. It requires the closure of the U.S. Mission to the UN, withdrawal from UN headquarters agreements, and the cessation of all U.S. financial contributions to the UN (except for termination costs). The bill also mandates that UN entities vacate U.S. government properties, revokes diplomatic immunity for UN officials in the U.S., and prohibits U.S. involvement in UN peacekeeping operations. Future U.S. re-entry into the UN would require Senate approval and a reservation allowing for immediate withdrawal.