Donald Trump and Elon Musk exchanged back-and-forth insults online after a disagreement over the president's spending bill. Here's a complete timeline of Donald Trump and Elon Musk's friendship, including why they are now feuding.

JD Vance and Susie Wiles pushed Elon Musk to repair his relationship with President Trump after the tech billionaire blew up at the president in a dramatic and public falling out, according to people familiar with the matter. In a call last Friday, the vice president and the White House chief of staff urged Musk to put an end to the feud.