Concerns that Musk and operatives have illegally accessed classified information as Republican support for Musk falls

Senior Democrats are demanding an investigation into potential national security breaches created by Elon Musk’s takeover of certain federal agencies through his self-styled department of government efficiency (Doge).

In a letter published on Thursday, the members of the House oversight committee say they are worried that Musk and his operatives have illegally accessed classified information and sensitive personal data at agencies including the office of personnel management (OPM), the US treasury, and the US Agency for International Development (USAid).