WASHINGTON—Top U.S. officials who oversee the Internal Revenue Service are expressing growing dismay with a year-old D.C. mystery: how confidential information about the nation’s wealthiest and highest-income taxpayers—including Jeff Bezos and Elon Musk—became public.
Extensive disclosures to news organization ProPublica made public the tax figures of many of the most well-known ultrawealthy Americans, showing their incomes, payments and tax strategies. There have been no arrests nor any official hints about how the wall of secrecy around tax records was broken; it is unknown whether the IRS has found or closed any security gaps.
