Justice Department Drops Investigation Into Jerome Powell

Plus: China’s DeepSeek unveils what it calls the most powerful open-source AI model on the market. And nuclear-energy company X-Energy’s $9 billion IPO means big gains for high-profile investors. Pierre Bienaimé hosts. Sign up for WSJ’s free What’s News newsletter. An artificial-intelligence tool assisted in the making of this episode by creating summaries that were based on Wall Street Journal reporting and reviewed and adapted by an editor.