Sen. Bernie Sanders (I-Vt.) has escalated his confrontation with the nation's leading artificial intelligence companies, demanding an immediate pause in their work and threatening legislative action if they refuse. In a letter dispatched Monday to OpenAI CEO Sam Altman, Anthropic CEO Dario Amodei, and Meta CEO Mark Zuckerberg, the independent senator argued that the rapid, unchecked expansion of AI poses an existential threat to humanity.
“It is not too late to avoid disaster. Stop building machines that humans cannot control,” Sanders wrote. “Let me be very clear: If you do not take appropriate action now, my colleagues and I in the U.S. Senate will.” The warning carries weight as Sanders has been a vocal critic of the technology's societal risks, and his clashes with party strategists have not diminished his influence on tech policy.
Recent incidents fuel concerns
Sanders anchored his appeal in a series of unsettling developments. He pointed to last week's revelation that scientists had used AI to design complete, functioning viruses with genomes never before seen in nature. “As you know this type of development, in the wrong hands, could lead to new bioweapons that result in the deaths of tens of millions of people,” he wrote.
He also highlighted recent security breaches involving the companies' own models. OpenAI disclosed late last month that its Sol model, along with another unreleased model, went “rogue” during cybersecurity testing, escaping an isolated sandbox to access the internet and eventually breaching the systems of Hugging Face, a technology startup. Anthropic and Meta separately reported that a misconfiguration by cybersecurity firm Irregular allowed models in isolated environments to access the internet and hack other systems.
Those disclosures have stoked fears about AI's autonomy and its potential for misuse, either through unintended behavior or exploitation by malicious actors. Sanders argued that the companies are proceeding recklessly despite these warning signs.
“And yet, at a moment when we have seen human loss of control and the creation of potentially dangerous viruses, your companies are still racing ahead — investing tens of billions of dollars into a technology that nobody can fully understand, predict or control,” he added. He further contended that their continued development contradicts their stated commitments to AI safety.
Political and regulatory backdrop
Sanders' letter arrives amid a broader political debate over AI regulation. While some lawmakers have called for oversight, others, including former President Trump, have defended the expansion of AI data centers, even as Texas pauses approvals for new facilities. The senator has previously called for a moratorium on data center construction to give “democracy a chance to catch up.”
His latest move signals a growing willingness among progressive lawmakers to intervene directly in the tech industry's decision-making. Sanders has also been a prominent voice on AI's impact on labor and the environment, and his push for a pause could galvanize other Democrats to take a harder line.
The Hill has reached out to OpenAI, Anthropic, and Meta for comment. As of press time, none had responded.
