Republicans fearful about potential consequences of a prolonged feud between US President Donald Trump and Elon Musk are urging the pair to call a truce. At a minimum, the explosion of animosity between the two powerful men could complicate the path forward for Republicans’ massive tax and border spending legislation that has been promoted by Mr Trump but criticised by Mr Musk.

Musk is not about to overtake Trump himself as the dominant figure in the party, to be clear. But the jilted former “special government employee” is uniquely suited to become a chaos agent who could terrorize the GOP — potentially wreaking havoc on Trump’s legislative agenda and the party’s midterm election plans.