President Donald Trump has postponed signing an executive order that would have established a process for the government to review AI models before their public release. Trump told the White House press pool he was dissatisfied with the order's language, saying: "I didn't like certain aspects of it." He emphasized the importance of maintaining America's lead in AI development, stating: "We're leading China, we're leading everybody, and I don't want to do anything that's going to get in the way of that leading." Unofficial reports suggest the delay was also practical in nature — not enough technology executives could arrange travel to Washington, D.C. on short notice for the signing ceremony. The executive order would have required the Office of the National Cyber Director and other agencies to create a formal evaluation process for assessing AI systems for security risks before deployment. The proposed order was partly prompted by concerns over advanced AI systems like Anthropic's Mythos and OpenAI's GPT-5.5 Cyber, both of which are designed to identify and exploit security vulnerabilities. According to CNN, one of the most contentious elements was a provision requiring AI companies to submit their most advanced models to the government between 14 and 90 days before public launch. Trump indicated this requirement could have hindered American competitiveness, characterizing the language as potentially "a blocker" that might slow U.S. progress in the AI race against China.