PolicyBrief
H.R. 3564
119th CongressMay 21st 2025
The Nuclear First-Strike Security Act of 2025
IN COMMITTEE

This Act restricts the use of federal funds for a U.S. nuclear first strike unless the President deems it necessary and Congress is notified seven days prior, except in cases of declared war, prior nuclear attack, or launch-on-warning scenarios.

Scott Peters
D

Scott Peters

Representative

CA-50

LEGISLATION

Nuclear First-Strike Bill Sets 7-Day Wait, But Grants President Unchecked Power in 'Launch-on-Warning' Scenarios

This bill, officially titled The Nuclear First-Strike Security Act of 2025, attempts to put procedural checks on the President’s ability to initiate a nuclear war. At its core, the bill restricts the use of federal funds for a “first-use nuclear strike” unless the President personally determines it is in the “best interest of the United States.” If the President makes that call, the Secretary of Defense generally has to notify the top four Congressional leaders—the Speaker, the House Minority Leader, and the Senate Majority and Minority Leaders—seven days before the strike happens. It’s an effort to build a little speed bump before the absolute worst decision is made, but as we’ll see, that speed bump has massive ramps around it.

The Fine Print of 'First-Use'

Before we dive into the implications, we need to talk definitions. The bill defines an “Ally of the United States” specifically as NATO members, Japan, South Korea, and Australia. A “First-Use Nuclear Strike” is defined as using nuclear weapons against another country before the Secretary of Defense and the Chairman of the Joint Chiefs of Staff confirm the other country has already launched a nuclear attack against the U.S. or an ally. This definition is crucial because it focuses on the nuclear exchange, not the conventional one. Theoretically, the U.S. could engage in a massive conventional war, and the first use of nuclear weapons would still trigger the notification requirements—unless an exception applies.

The Congressional Speed Bump and the Presidential Bypass

The most significant element of this bill is the mandatory seven-day notification to Congress. For the average person, this means that in a non-crisis situation, the legislative branch gets a week to weigh in or at least be informed before the start of a nuclear conflict. This is intended to increase accountability. However, the bill introduces three massive exceptions where the seven-day notice is completely waived: if Congress has formally declared war, if the U.S. or an ally has already suffered a nuclear attack, or if it is a “launch-on-warning scenario.”

That last exception—the “launch-on-warning scenario”—is where the bill grants immense, unchecked power to the Executive Branch. A launch-on-warning scenario is defined as when U.S. early warning systems detect a missile launch aimed at the U.S. or an ally, and it hasn't landed yet. In that moment of absolute, high-stakes crisis, the President can authorize a retaliatory or preemptive strike without any Congressional notification whatsoever. While speed is necessary in this scenario, removing the notification entirely means the decision to initiate a nuclear conflict rests entirely on the President and their immediate advisors, bypassing any formal oversight from Congressional leadership when the stakes are highest.

Who Holds the Keys to the Nuclear Arsenal?

This legislation attempts to create checks and balances but ultimately concentrates the most critical decision-making power. For the general public, this is a question of accountability. The core trigger for a first strike is the President’s personal determination that it is in the “best interest of the United States.” This is a highly subjective standard with no statutory definition. It essentially means that if the President decides it’s a good idea, the only procedural hurdle is a seven-day wait—unless they can classify the situation as a launch-on-warning scenario, which eliminates the wait entirely. This bill clarifies the procedures, but it also formalizes a path for the President to act unilaterally in a crisis, reducing legislative oversight just when the public needs checks on executive power the most. It’s a classic trade-off: a small procedural gain in transparency for routine decisions, but a massive grant of unchecked authority during the most critical, time-sensitive moments.