Elon Musk’s once-rosy relationship with President Donald Trump has turned sour in a high-profile political and financial feud that has played out publicly on social media. The fallout began after Musk stepped up his attacks on the sweeping tax and spending bill the president wants to see pushed through Congress,

Elon Musk left Washington D.C. last week making triumphant yet dubious claims he had achieved most of the federal headcount and spending cuts he’d set out to impose. Scarcely back in his role leading Telsa,