The article talks about Senator Elizabeth Warren writing a letter to Treasury Secretary Scott Bessent to ask why Elon Musk's team was given access to the federal payment system. Democrats are concerned because this could allow Mr. Musk to track and limit government spending. David Lebryk, a career civil servant, resigned after being asked to grant Mr. Musk's team access to the system. Senator Warren is worried that sensitive data of millions of Americans could be at risk. Mr. Musk's allies have been granted access to the system but have not been able to block any government payments. Senator Warren is asking for answers about what systems were accessed, what they plan to do with the data, and how they will protect Americans' private information. There are concerns about the influence of Mr. Musk, who is the world's richest man. Senator Warren believes it is dangerous to give control of critical systems to an unelected billionaire and his team. The article ends with a message about having trouble retrieving the full content, asking the reader to enable JavaScript or subscribe to view the entire article.