Artificial intelligence has entered a new phase.
For years, the central question was how powerful AI could become. Today, a more urgent question is emerging: what happens when an advanced AI system behaves in ways its developers did not anticipate—and who has the authority and technical ability to stop it?
California is putting that question at the center of AI policy.
On September 18, 2026, Governor Gavin Newsom issued an executive order accelerating independent oversight of advanced AI systems and directing experts to develop recommendations that could strengthen the state’s AI safety framework. Among the proposals California is advancing is something once associated more with science fiction than public policy: an AI “kill switch.”