Download the Human Control of Weapons Act — Full Text (PDF)
Human Control of Weapons Act
The Human Control of Weapons Act is a legislative proposal drafted in 2014 to require human control over autonomous weapons systems used, acquired, or developed by the United States. It was written after Department of Defense Directive 3000.09, the policy framework governing autonomy in weapons systems first issued by the Obama White House in November 2012 and before the same directive was updated in January 2023.
The directive is widely misunderstood — including by Human Rights Watch, which characterized the original as a moratorium on fully autonomous weapons. It is not. No category of autonomous weapon is prohibited under either version of Directive 3000.09. The directive creates a senior review process for certain autonomous weapons before development and fielding, but that process can be waived for urgent military need, and by the Pentagon’s own account, no weapon system was submitted for senior review in the seven years following the directive’s adoption. The 2023 update further softened its language, replacing the standard of “ensure” with “sufficient confidence” — a phrase that appears six times in the updated directive but not once in the original. That shift is not incidental. “Ensure” demands a binary answer. “Sufficient confidence” accepts a probability — the kind of output produced by large language models and other probabilistic AI systems now being integrated into military targeting infrastructure. The update also requires only that commanders exercise “appropriate levels of human judgment over the use of force” — a phrase the U.S. government has publicly acknowledged is deliberately flexible.
The Human Control of Weapons Act took a fundamentally different approach. Rather than attempting to define what machines must or mustn’t do — a semantic contest the directive’s language was designed to win — the Act established a requirement rooted in what a human must do. It proposed that a human operator must take positive action to initiate the engagement of each specific individual target. The operator must confirm that each target is selected by a duly authorized human commander. The commander must locate and identify the target as valid before selecting it for engagement. Each role carries individual accountability. That standard does not shift when technology improves, does not vary by context, and cannot be waived.
To make that accountability enforceable, the Act required that all weapon systems operated through electronic targeting and fire control systems — including unmanned and remotely operated systems — record all targeting data presented to the commander and operator, all commands issued, all operator actions, the time and place of engagement, and the identities of both commander and operator. These records would be retained by the Department of Defense in encrypted format.
Accountability without a record is not accountability. The Act made human accountability its foundation.
The Act’s scope extended beyond the Department of Defense. It applied to the Department of Homeland Security, the Department of Justice, and any other agency of the United States — anticipating that autonomous systems capable of targeting human beings would not remain confined to the battlefield. Directive 3000.09, by contrast, governs only the DoD. No equivalent policy exists for domestic law enforcement or intelligence agencies.
The Act included a narrow exception for active defense systems designed only to engage incoming uninhabited munitions approaching human-inhabited locations or vehicles at speeds too great for human response. Even within that exception, the Act required a supervising human operator with full access to the system’s detection data, immediate alert upon threat detection, the ability to preempt engagement and deactivate the system, maximum practicable delay before automatic engagement to permit human intervention, and full encrypted recording of all system and operator actions. The line between defensive and offensive autonomous systems can be blurry — but only to those who ultimately choose to cross it.
The Act also directed the President to pursue an international treaty banning autonomous weapons and requiring human control of all weapons, using the Act’s terms as a model while remaining open to modifications consistent with its purposes. It was proposed not only as domestic law but as a foundation for international agreement.
The technical framework for the Act was provided by physicist Mark Gubrud, whose expertise in weapons technology and arms control gave the proposal its scientific rigor. Chris Kohler of the Human Peace Project initiated the effort, brought it to Capitol Hill, and presented it to Congressional offices including those on the House Armed Services Committee, as well as to policy organizations in Washington. The proposal was received seriously in the offices that reviewed it.
Congress did not act. The political conditions were not favorable. Directive 3000.09 stood as established policy under an administration few in the Democratic caucus were willing to challenge on defense matters. On the Republican side, there was little appetite to restrict any weapons capability a potential adversary might also pursue. The window for preemptive legislative action on autonomous weapons closed without public debate and without accountability.
Since the Act was proposed, AI-driven targeting systems have become operational in multiple theaters. Israel’s Lavender, Gospel, and Where’s Daddy systems processed mass surveillance data to generate kill lists in Gaza. The 2026 standoff between the Pentagon and Anthropic — maker of the AI model Claude — revealed that large language models were being integrated into the U.S. military’s intelligence and targeting infrastructure through platforms like Palantir. The language games the Act was designed to close — “fully autonomous,” “semi-autonomous,” “appropriate levels of human judgment,” “lawful use” — remain the primary architecture under which these systems operate.
The Human Control of Weapons Act did not become law. The arguments embedded in its language have not been answered. The full text is available below.
For the story behind the Act — some of the rooms, the people, and what was learned in Washington — read The Machine We Are Building Into the Machine.