California eyes AI "kill switch" mandate as Congress stalls on oversight

California Gov. Gavin Newsom has issued an executive order aiming to establish the state as the nation's leading force in AI regulation, including potential requirements for a mechanical "kill switch" on frontier AI systems.

The order's scope#

The directive tasks a convened group of experts with delivering recommendations within two months on strengthening AI safety protections under state law. The proposal contemplates several concrete measures: requiring AI developers to host independent verification teams onsite for routine audits, subjecting transparency reports and risk assessments to independent auditor standards, establishing a verified "kill switch" mechanism, and mandating companies to disclose critical incidents such as loss-of-control events. The order also accelerates state implementation of two previously signed laws establishing frameworks for independent AI safety verifiers and creating a registry of qualified AI auditors.

Why now#

The federal government appears unlikely to move on comprehensive AI oversight in the near term. Congress faces an extended recess before November, and looming midterm elections make substantial legislative action in the Senate improbable. Recent discourse—including warnings from AI researchers about existential risks—has sparked congressional interest, yet little momentum exists for meaningful bills. Meanwhile, the Trump administration has dismissed guardrails, with the President insisting the primary safeguard is a capable chief executive.

California's broader strategy#

Newsom has already signaled willingness to move beyond this executive order. Earlier in the week, he indicated interest in convening lawmakers for a special legislative session focused on AI, alongside potential additional executive action. He is explicitly framing California's approach as a model for national adoption, urging Congress and the Trump administration to "review and adopt the state's framework, or use its nation-leading regulation as a floor, not a ceiling, for the benefit and safety of all Americans."

In a statement, Newsom underscored his sense of urgency: "The federal government's abject failure to create any form of meaningful AI oversight or accountability should alarm every American, especially when AI CEOs themselves are begging for regulation. We're not waiting to act – we're going to speed up our work on substantial and responsible AI oversight before it's too late."