The National Treasury Employees Union (NTEU), which represents career IRS auditors, has joined the litigation." In their official filing, the National Treasury Employees Union argued that Trump is lying about canceling the slush fund and that, regardless, the demand that he not be audited is legally unenforceable. The lawsuit places career civil servants at the center of an unprecedented constitutional showdown over executive power and tax compliance. Legal experts warn that if the immunity order stands, it establishes a dangerous double standard, transforming a federal agency into a political shield. With the National Treasury Employees Union now driving the litigation, the battle moves beyond mere partisan fighting to focus on safeguarding the institutional integrity of the nation's tax system against unprecedented presidential overreach.