Elon Musk, the richest man in the world, has been a critic of President Donald Trump's "big, beautiful bill," after serving as his biggest financial backer.

In an exclusive interview with Meet the Press, Sen. Markwayne Mullin (R-Okla.) dismisses the concerns of Elon Musk, who Mullin once called “the best entrepreneur we’ve ever had in of our lifetime,” over the possible economic impact of President Trump’s “one big,