US TV star dismisses 2020 bid
Oprah Winfrey has told the US magazine InStyle that she does not "have the DNA" to be US president.
She has been widely touted as a future Democratic contender for the 2020 elections after a rousing speech at the Golden Globes earlier this month.
But she told InStyle: "I've always felt very secure and confident with myself in knowing what I could do and what I could not.
