I wouldn't put Donald Trump and Oprah Winfrey in the same category. Oprah was/is into losing weight, NOT being a fatso. She was a talk-show host. There are TONS (pun intended) of fatsos losing weight and the talk show hosts thing started with Merv Griffith--I think. And there have been TONS of them too. Big deal.
But being the President of the greatest, wealthiest and most powerful country on the planet? Pul-eeze. Those two people aren't even in the same galaxy!