President Donald Trump convened his Cabinet in person on Thursday to deliver a message: You’re in charge of your departments, not Elon Musk. According to two administration officials, Trump told top members of his administration that Musk was empowered to make recommendations to the departments but not to issue unilateral decisions on staffing and policy. Musk was also in the room. The meeting followed a series of mass firings and threats to government workers from the billionaire Tesla founder, who helms the Department of Government Efficiency, that created broad uncertainty across the federal government and its workforce. DOGE’s actions have...