Kate Rooney reports on the growing political divide over AI safety regulation, highlighting calls from Anthropic and Elon Musk for peer reviews and model testing. In contrast, Nvidia’s Jensen Huang and President Trump dismiss existential risks as irresponsible or a hoax, arguing that slowing development could cede the lead to China. This shift has stalled legislative momentum in Congress, creating a complex environment where existing laws are seen as sufficient by some, while experts continue to debate how to effectively police the industry.