The role of Elon Musk's SpaceX in an ambitious new U.S. missile defense system is in question following the dramatic feud last week between the billionaire entrepreneur and President Donald Trump, according to three people familiar with the project.

The White House ordered NASA and the Defense Department to collect detailed records on SpaceX’s federal contracts after President Trump clashed publicly with Elon Musk, according to Reuters. The decision was made earlier this month,

Following escalating tensions between President Trump and Elon Musk, the White House has directed the Defense Department and Nasa to scrutinize SpaceX's multi-billion dollar contracts. This review, prompted by Musk's criticisms of Trump,