Elon Musk listens to US President Donald Trump speak in the Oval Office of the White House in Washington, DC, US, February 11, 2025. REUTERSElon Musk listens to US President Donald Trump speak in the Oval Office of the White House in Washington, DC, US, February 11, 2025. REUTERSBillionaire Tesla CEO Elon Musk is leaving the Trump administration after a tumultuous period working to restructure the federal government, a White House official confirmed. "The DOGE mission will only strengthen over time as it becomes a way of life throughout the government," Musk said. Musk, the world's richest person, has defended his role as an unelected official who was granted unprecedented authority by Trump to dismantle parts of the US government.