PolicyBrief
S. 3106
119th CongressNov 5th 2025
No Nuclear Testing Without Approval Act
IN COMMITTEE

This Act requires explicit Congressional approval via a joint resolution before the United States can conduct any explosive nuclear testing, except in response to a foreign test or a certified technical need.

Catherine Cortez Masto
D

Catherine Cortez Masto

Senator

NV

LEGISLATION

New Bill Puts 2/3 Senate Vote Requirement on Nuclear Testing, Restricting Presidential Power

This bill, the No Nuclear Testing Without Approval Act, is a major power shift, essentially slamming the brakes on the President’s ability to conduct explosive nuclear testing. It says the U.S. can’t detonate a nuclear device unless one of two things happens: either a foreign nation tests one first, or a group of high-level officials determines there is a “technical need” to ensure the safety or effectiveness of our existing arsenal.

But the real kicker is the approval process. Before any test, the President has to give Congress a 180-day heads-up. Then, Congress must pass a joint resolution approving the test. Crucially, if the test is a response to a foreign power, that approval resolution needs a two-thirds affirmative vote in the Senate. That’s a massive hurdle, making it incredibly difficult to greenlight a test even in a rapidly escalating global crisis. This isn't just paperwork; it’s a fundamental change to how the U.S. manages its nuclear deterrent.

The “Technical Need” Bottleneck

Let’s talk about the “technical need” condition. This isn't some vague mandate; the bill defines it as requiring a consensus among specific officials that a test is necessary to resolve an issue with the “safety, reliability, performance, or military effectiveness” of a nuclear weapon type. Think of it like this: if you’re driving an old car and the mechanic says the brakes are fine, but three other experts need to sign off before you can replace them, you’re looking at serious delays.

For the people working at our national labs and in the defense sector, this means their ability to quickly validate the safety or effectiveness of a weapon—a core part of the Stockpile Stewardship Program—is now severely restricted. The 180-day notification period alone could be a massive delay if a critical safety issue is discovered that requires immediate testing for validation. The bill mandates that the President has to explain why any alternative non-explosive options were rejected, forcing a detailed public debate on highly sensitive technical matters.

Congressional Control Over Crisis Response

The most significant impact of this bill is on the Executive Branch’s operational flexibility, especially in national security crises. The President, as Commander in Chief, is responsible for rapid response. But if a hostile foreign power conducts a test, and the U.S. determines it needs to respond in kind—perhaps to validate a new warhead or signal resolve—the bill requires a two-thirds majority in the Senate for approval.

In today’s highly polarized political climate, achieving a two-thirds vote on anything is a heavy lift. This provision effectively gives a minority of Senators the power to veto a major national security decision, potentially paralyzing the U.S. response capability. While the bill does increase democratic oversight and transparency, which is a clear benefit for accountability, it does so at the cost of executive speed and flexibility in the face of geopolitical threats. For those responsible for national defense, this is a significant constraint, moving critical operational decisions firmly into the legislative arena.