This bill would require Congress to approve any decision by the President to resume explosive nuclear testing in the United States. Currently, the U.S. has observed a moratorium on nuclear testing since 1992, but this law would make that restriction legally binding and require congressional action to lift it.

Here's how it would work: If the President wants to conduct a nuclear test, they must notify Congress at least 180 days in advance with detailed information about why the test is needed, what alternatives were considered, and how much it will cost. There are two scenarios that could trigger testing. First, if another country conducts a nuclear test, the President could propose a response test, but it would need approval from two-thirds of the Senate—a high bar that makes it difficult to pass. Second, if military officials determine there's a genuine technical need to test a nuclear weapon's safety or reliability, the President could propose that test under a faster approval process, though it still requires two-thirds Senate approval.

The bill sets up strict timelines and procedures for Congress to consider these proposals. The Armed Services committees in both chambers have 60 days to review the President's request, and Congress has 120 days total to vote. The law specifically excludes smaller, non-explosive experiments that scientists currently use to maintain nuclear weapons without actually detonating them. Essentially, this bill puts a congressional check on presidential power over nuclear weapons testing, ensuring that any return to explosive testing would require significant political support rather than being a unilateral executive decision.