Anthropic, the developer of the Claude series of models, has been privately circulating a draft bill to lawmakers on Capitol Hill that would establish federal rules for frontier AI systems.

According to reporting by Politico, which obtained the confidential proposal and spoke with three people familiar with the discussions, the document closely tracks the company’s internal Advanced AI Framework—policies it has been promoting to federal and state officials since mid-2025.

An Anthropic spokesperson described the text as reflecting “sensible policies” the firm believes Congress should enact.

The draft sets a high threshold before the government could intervene to block a model’s release or continued use.

Authorities would be limited to situations involving a foreseeable and imminent risk of more than $1 billion in damages or the death or serious injury of more than 50 people.

Even then, the harm would have to arise from one of three specific pathways: the creation or release of a biological weapon, the model escaping or evading its developer’s controls, or a cyberattack.

Language in the proposal echoes elements of California’s SB 53, enacted the previous year, which Anthropic supported.

Enforcement authority would be tightly constrained. Independent evaluators, registered with the Department of Commerce, would conduct periodic assessments of frontier labs and their most advanced models.

Developers could compensate these evaluators, provided payment was not contingent on the outcome of any review.

Should evaluators identify an “imminent enumerated risk,” they would be required to notify Commerce within 72 hours.