WASHINGTON (Reuters) - Media mogul Oprah Winfrey has no interest in running for U.S. president in 2020, she said in an interview with InStyle magazine published on Thursday after weeks of speculation and calls to run fueled by a speech she made at the Golden Globes. ?It?s not something that interests me ... Winfrey, who is known by millions on first-name basis, first rose to fame as the host of a television talk show, using it to build a media empire that spans magazine publishing, movie and television production, cable TV and satellite radio. Unlike every U.S. president before Donald Trump, she has no prior political or military experience.