Tesla is weighing whether to sell, spin off, or shut down its China business to clear a path for a possible merger with SpaceX, according to a Wall Street Journal report that Elon Musk has publicly and flatly denied.

The move would untangle Tesla’s vast Chinese manufacturing from a defence contractor whose Beijing exposure has become a regulatory headache, fitting a pattern in which merger talk has turned serious since SpaceX’s IPO.

The logic is about national security, not sales. SpaceX is one of Washington’s most important space and defence contractors, and any Chinese ownership tied to it draws intense scrutiny, so folding in Tesla’s China-heavy operations would raise obvious obstacles.

Tesla’s footprint there is enormous. Its Shanghai Gigafactory builds more than half of all Tesla vehicles worldwide, exports to Europe and Asia, and is widely regarded as the company’s fastest and cheapest plant.

That factory produced Tesla’s four-millionth China-made car in December, a milestone that underlines how central the country is to output. Separating it out would be one of the most consequential corporate surgeries the company has ever attempted.