The Tesla and SpaceX CEO has received more US government subsidies "than any human being in history," the president claimed

US President Donald Trump has suggested that Elon Musk should be investigated by the Department of Government Efficiency (DOGE), which the tech billionaire formerly headed, for allegedly benefiting excessively from government subsidies.

Musk, a former ally of Trump, stepped down as the head of DOGE last month amid disagreements with the president over his so-called "big, beautiful" budget bill, which includes a $5 trillion debt ceiling increase. The Tesla and SpaceX CEO has repeatedly criticized the legislation, saying it undermined his work with DOGE to cut federal spending.

The tech billionaire attacked the bill and its supporters again on Tuesday as the US Senate began voting on the amendments to Trump's 940-page proposal.

"Every member of Congress who campaigned on reducing government spending and then immediately voted for the biggest debt increase in history should hang their head in shame," Musk wrote on X.

"And they will lose their primary next year if it is the last thing I do on this Earth," he warned.

The entrepreneur also reiterated his call for a new "America Party" to be formed to serve as "an alternative to the Democrat-Republican uniparty so that the people actually have a VOICE."

Trump, who claims that the actual reason for Musk's anger was not the "big, beautiful bill," but his plans to roll back the government's electric vehicle (EV) subsidies, fired back at the Tesla and SpaceX CEO shortly afterwards in a post on his Truth Social platform.

"Elon may get more subsidy than any human being in history, by far, and without subsidies, Elon would probably have to close up shop and head back home to South Africa," he wrote.

Without the assistance from the government to Musk's companies, there would be "no more Rocket launches, Satellites, or Electric Car Production, and our Country would save a FORTUNE. Perhaps we should have DOGE take a good, hard, look at this? BIG MONEY TO BE SAVED!!!" Trump insisted.

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"Elon Musk knew, long before he so strongly Endorsed me for President, that I was strongly against the EV Mandate. It is ridiculous, and was always a major part of my campaign. Electric cars are fine, but not everyone should be forced to own one," Trump added.