The US Department of Justice is investigating personal benefits and perks that Tesla may have provided Elon Musk since 2017 as part of a broader criminal probe. This investigation is examining issues including a proposed house for Musk. Prosecutors are seeking information about transactions between Tesla and other entities related to Musk, Tesla's CEO. The investigation appears to be scrutinizing Musk's compensation and perks from Tesla over a longer period than previously known publicly, dating back to at least 2017.