The U.S. Internal Revenue Service has blocked a key aide to tech billionaire Elon Musk from accessing individual taxpayer returns or other personal information as part of a deal signed between the tax-collecting agency and the Trump administration.

Elon Musk’s Department of Government Efficiency is seeking access to troves of sensitive taxpayer data at the IRS.

A DOGE software engineer is reportedly close to gaining access to sensitive taxpayer data, which is raising alarms. Reports that Elon Musk’s Department of Government Efficiency (DOGE) is seeking access to a guarded Internal Revenue Service (IRS) system has raised alarm bells in Washington and across the nation.