The Guardian reported on September 13 that OpenAI CEO Sam Altman and Elon Musk, along with other AI industry leaders, made a rare joint call to slow ‘reckless’ artificial intelligence development, warning that frontier models may pose systemic risks to human civilization. Almost simultaneously, senior officials in the Trump administration publicly rejected any slowdown, arguing that excessive regulation would undermine U.S. global competitiveness in a critical technology. The open disagreement between industry leaders and the White House marks a new phase in the long-running U.S. debate over whether to accelerate or decelerate AI development, and is likely to shape legislative pace, industry self-regulation and cross-border regulatory coordination for the foreseeable future.