Musk launched a full attack on Trump on social media platforms, stating, "Without me, Trump can't win the election, the House will be controlled by the Democrats, and the Republicans in the Senate will only be 51 to 49," and also called Trump "ungrateful." This marks the complete break between Musk and Trump.

The core of their conflict lies in a recent tax reform bill promoted by Trump. Musk publicly criticized this bill on X on Wednesday, claiming it would burden the United States with heavy debt. Trump, on Thursday, told the media at the White House that Musk was angry because the bill cut electric vehicle tax subsidies and expressed disappointment in Musk. Musk responded that even if the cuts to electric vehicle/solar subsidies were retained, the "pork projects" in the bill should be eliminated.

Additionally, Musk and Trump have differences in tariff policy, government reform, and Musk is dissatisfied with Trump's meeting with his "rival," OpenAI CEO Sam Altman.

Musk was an important confidant during Trump's second term and became one of the most influential donors to the Republican Party over the past year, contributing approximately $300 million to Trump's re-election campaign. In return, Trump appointed Musk as the leader of the newly established "Department of Government Efficiency." However, as Musk's status as a "special government employee" expired, he officially left the White House last week.