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."

"They've been under incredible stress for five months, give them a break," Errol Musk said while attending a forum by Putin's ultranationalist ally in Moscow.