Public Citizen, a nonprofit consumer advocacy organization, escalated its warnings about Elon Musk’s Grok AI on Friday after publishing new evidence showing the chatbot cited neo-Nazi and white-nationalist websites as credible sources. The group said the behavior should disqualify Grok from any federal use, and renewed calls for the U.S. Office of Management and Budget to intervene after months without a response. Citing a recent study by Cornell University, Public Citizen said that Grokipedia, the new AI-powered Wikipedia alternative launched by Musk in October, repeatedly surfaced extremist domains, including Stormfront, reinforcing earlier concerns that emerged after the model referred to...