Senator Elizabeth Warren has raised concerns about potential conflicts of interest involving Elon Musk, who has become a close adviser to President-elect Donald Trump. In a letter to Trump, she demands transparency on the ethical guidelines governing Musk's role, especially given his substantial private interests and past contributions to Trump's campaign. Warren warns that without stringent conflict of interest agreements, Musk's influence could lead to corruption, particularly in matters involving government contracts and regulatory decisions benefiting his companies. The Trump transition team defended Musk's role, emphasizing their commitment to ethical standards.