Meet the Press moderator Kristen Welker joins Sunday TODAY’s Willie Geist to discuss how President Donald Trump and billionaire Elon Musk’s falling out over Trump’s budget bill will impact its fate in the Senate and Republican lawmakers who are forced to take sides.

Here's what to know about the feud between Donald Trump and Elon Musk over the president's "Big Beautiful Bill."

Elon Musk's father Errol has called his son's feud with President Donald Trump a "mistake," saying the pair "have been under incredible stress for five months." Why It Matters The world has watched the dramatic fallout between Trump,