U.S. AGENCIES TRACKED FOREIGNERS TRAVELING TO SEE MUSK: WSJ Several U.S. government agencies in 2022 and 2023 tracked foreign nationals coming and going to Elon Musk's properties, according to people familiar with the matter. The investigation included the Department of Homeland Security and the Justice Department. It focused on people visiting the tech billionaire, from countries in Eastern Europe and elsewhere, who might have been trying to influence him.