The truce between Elon Musk and President Donald Trump didn’t even last a month.

After the Senate narrowly passed a procedural vote to debate Trump’s “Big, Beautiful Bill” over the weekend, Musk on Monday said he would use his vast resources to launch primary campaigns against Republicans in Congress who voted for the massive domestic policy agenda. Musk spent much of Monday and early Tuesday morning posting and re-posting messages that criticize the tax cut and spending bill — particularly for its sky-high cost.

Trump late Monday night fought back, suggesting his administration may investigate Musk’s companies’ massive government subsidies.

So far, the feud hasn’t grown as personal or as vicious as their public blow-up last month when Musk, without providing evidence, accused Trump of withholding information about disgraced financier and convicted pedophile Jeffrey Epstein, and claiming that Trump’s name was included in the government’s so-called Epstein files.

A week after the peak of that feud, Musk said he regretted some of his posts about Trump. Musk deleted some of his most inflammatory X posts, including the one relating to Epstein and another agreeing with the suggestion that Trump should be impeached. Musk had since softened his tone about Trump and the bill, largely shifting his focus on social media and in interviews to his companies.