DONALD Trump has said Elon Musk has gone completely “off the rails” after the Tesla CEO announced he was launching a new political party.

It comes after Elon Musk said on Friday that he had set up the America Party – in a bid to challenge the Republican and Democratic two-party system.

Trump slammed Musk’s move to start the America Party, arguing that third political parties historically fail in the US and only cause “disruption and chaos”.

It’s unclear whether the party has been formally registered with US election authorities.

Even if Musk wanted to run for President, he wouldn’t be eligible under the US Constitution.

Only “natural born citizens” can hold the office, meaning those born in the US – but Musk was born in Pretoria, South Africa.

On Friday, Musk cited a poll on his social media platform X, asking whether people “want independence from the two-party (some would say uniparty) system” that has dominated US politics for two centuries.

The yes-or-no survey got more than 1.2 million responses.

He wrote on Saturday: “By a factor of 2 to 1, you want a new political party and you shall have it!”

“When it comes to bankrupting our country with waste & graft, we live in a one-party system, not a democracy. Today, the America Party is formed to give you back your freedom,” he wrote.

Besides criticising the America Party, Trump launched several other attacks on Musk in Truth Social post on Sunday.

He called Musk “off the rails” and a “train wreck” over the past five weeks.

Trump claimed Musk opposed the “Big, Beautiful Bill” because it eliminates the “ridiculous Electric Vehicle (EV) Mandate”, which would have “forced” people to buy electric cars.

Lastly, Trump said Musk asked a close friend to run NASA, who the US president described as a “blue-blooded Democrat”.

Trump called this “inappropriate”, suggesting a conflict of interest given Musk’s own space business, SpaceX.

This follows a massive fallout between the US president and the world’s richest man over the new budget law.

Musk has claimed the “Big, Beautiful Bill” would bankrupt the US.