The No Nuclear Testing Act of 2025 prohibits the U.S. government from using federal funds to conduct or prepare for explosive nuclear weapons tests. The ban applies to fiscal year 2026 and any prior fiscal year funds that remain available for spending. The legislation affects the Department of Energy, Department of Defense, and any other federal agencies involved in nuclear weapons programs. The bill makes an exception for non-explosive nuclear stewardship activities that comply with the zero-yield standard, allowing continued scientific work to maintain the nuclear stockpile without actual detonations. The bill was introduced in October 2025 and referred to the Senate Armed Services Committee.
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