What is the AI Kill Switch Act proposed in the US and how will it work?

What is the AI Kill Switch Act proposed in the US and how will it work? Two members of the United States Congress have introduced bipartisan legislation that would require developers of the country's most powerful artificial intelligence systems to build in a "kill switch", allowing advanced AI models to be slowed, suspended or shut down if they pose a catastrophic risk. The proposed AI Kill Switch Act, introduced on Thursday by Democratic Representative Ted Lieu and Republican Representative Nathaniel Moran, would give the US government authority to order companies developing advanced AI systems to intervene if their models escape human control or threaten human life, critical infrastructure or the economy. The disclosure has intensified debate over whether increasingly powerful AI systems require stronger safeguards. "Congress must act quickly to ensure humans remain able to say stop, no matter how powerful these systems become," said Brendan Steinhauser, head of the Alliance for Secure AI.