US Federal 2025-2026 Regular Session

US Federal Senate Bill SB4113

Introduced
 
Introduced
3/17/26  

Caption

AI Guardrails Act of 2026

Summary

The AI Guardrails Act of 2026 would place explicit limits on how the Department of Defense may use artificial intelligence. It states Congress’s view that the military should continue adopting AI to preserve U.S. military advantage, but only in ways that are secure and reliable. The bill then prohibits AI from being used to launch or detonate nuclear weapons, from monitoring or targeting people in the United States without an individualized legal basis, and from using lethal force in autonomous weapon systems without appropriate human judgment and supervision. The bill also preserves a narrow path for autonomous weapons-related AI through a waiver process. The Secretary of Defense could waive the lethal-force restriction for up to one year at a time if extraordinary national security circumstances require it and if the system’s risk of acting inconsistently with commander intent is no worse than trained human operators performing similar tasks. Any waiver would require written certification to congressional defense committees and detailed notice within five days, including operational parameters, safeguards, testing results, and the intended duration. The bill defines artificial intelligence by reference to existing federal law.

Impact

If enacted, the bill would directly constrain Department of Defense policy and operations by creating statutory limits on AI use in nuclear command and control, domestic surveillance or targeting, and autonomous weapons. It would add a congressional reporting and waiver framework for certain autonomous weapon systems, increasing oversight of DoD AI development, fielding, and modifications. The measure would not broadly regulate civilian AI, but it would affect military procurement, weapons testing, operational doctrine, and compliance with existing DoD Directive 3000.09 and related AI governance rules.

Sentiment

The bill’s text reflects a generally pro-AI, pro-military-modernization posture paired with strong caution about high-risk uses. Because there are no committee transcripts or recorded votes provided, there is no direct evidence of debate or bipartisan support/opposition in the available materials. The framing suggests an attempt to balance national security benefits from AI adoption with safeguards against misuse, especially in nuclear and lethal autonomous contexts.

Contention

The main points of contention are likely to be the scope of the domestic-use prohibition, the restriction on AI in lethal autonomous weapons, and the degree of human control required before force can be used. Supporters would likely emphasize civil liberties, accountability, and the need to prevent accidental or unauthorized escalation, while critics may argue the bill could slow military innovation or limit battlefield flexibility. The waiver provision appears designed to address these concerns by allowing exceptions in extraordinary national security circumstances, but it still requires congressional notification and a high evidentiary showing, which could itself be controversial.

Companion Bills

No companion bills found.

Previously Filed As

US SB1053

FIGHT China Act of 2025 Foreign Investment Guardrails to Help Thwart China Act of 2025

US SB4216

GUARDRAILS Act Guaranteeing and Upholding Americans' Right to Decide Responsible AI Laws and Standards Act

US HB2246

Foreign Investment Guardrails to Help Thwart (FIGHT) China Act

US HB8031

GUARDRAILS Act Guaranteeing and Upholding Americans’ Right to Decide Responsible AI Laws and Standards Act

US SB904

Data Brokers - Registry and Gross Income Tax (Building Information Guardrails Data Act of 2025)

US SB3809

AI Grand Challenges Act of 2026

US HB06752

An Act Adjusting The Fiscal Guardrails.

US SB3957

NSF AI Education Act of 2026

US HB7434

AI Grand Challenges Act of 2026

US HB05187

An Act Adjusting The Fiscal Guardrails.

Similar Bills

No similar bills found.