The public unravelling of the alliance between Donald Trump and Elon Musk — once seen as one of the most powerful relationships in American business and politics — has rapidly turned into a high-stakes standoff with far-reaching consequences.

In a dramatic turn Thursday, Trump threatened to cancel federal contracts with Musk’s companies, jeopardizing the businessman’s vast government-dependent empire, including SpaceX and Tesla.

Meanwhile, Musk’s vocal opposition to Trump’s cornerstone legislative package has created a fissure within the Republican Party just as the bill moves through Congress.

As both men dig in, the political and financial stakes are mounting — not just for Musk and Trump, but for the broader markets, government projects and the Republican Party’s legislative agenda.

Musk’s SpaceX risks losing billions in federal contracts

Elon Musk, who heads Tesla, SpaceX and artificial intelligence startup xAI, has long been a favoured partner of the US government.

But that relationship is under threat.

On Thursday, after days of criticism from Musk, Trump said he would consider canceling billions of dollars in government contracts with Musk’s companies.

SpaceX in particular has enjoyed deep ties with NASA, the Pentagon and intelligence agencies.

It currently holds multibillion-dollar contracts to ferry astronauts, launch national-security payloads, and build vehicles for future moon missions.

Just two months ago, it won a $5.9 billion Pentagon deal and is part of NASA’s $4 billion program for moon landings.