The new US missile defense system will explore alternatives to Elon Musk's SpaceX, with Amazon.com's Project Kuiper among the main contenders.

The fallout between the president and the rocket maker’s billionaire founder threatened the company’s multibillion-dollar agreements with the government.

SpaceX CEO Elon Musk hinted on Tuesday that the Trump administration could possibly be breaking the law after reports emerged that the government was courting rival Amazon for the coveted Golden Dome missile defense system.

President Donald Trump met privately with Amazon founder Jeff Bezos at the White House last week, according to sources cited by CNBC. The agenda for the hour-long meeting remains undisclosed. It comes as the Trump administration reconsiders its ties to Elon Musk’s SpaceX and evaluates new partners for the $175 billion Ground-Based Midcourse Defense missile defense system.

The Trump administration reviewed SpaceX’s contracts amid potential cuts, following the president's concerns about Elon Musk’s companies, according to The Wall Street Journal. The June review included a request for spreadsheets detailing contract values and potential alternatives;

SpaceX’s recent tender offer reportedly included a warning that CEO Elon Musk might return to politics again. According to a Bloomberg News report, the offer contained language that Musk has served as a special adviser to President Donald Trump “in connection with the Department of Government Efficiency and may in the future serve in similar roles