Donald Trump Attends UFC 309 W/ Elon Musk, RFK Jr., Gets Massive Ovation!

Donald Trump, Elon Musk, and RFK Jr. walk into an arena ... No punch line here -- just punches -- as the President-elect returned to the site of his pre-election rally, and brought some famous buddies! The soon-to-be 47th U.S. President, flanked by…