Hillary Clinton on 2016 loss: 'It hurts a lot'

Hillary Clinton says she is "done" being a political candidate, and that her shock US presidential loss last year to Donald Trump remains a source of deep anguish.It hurts a lot," the 2016 Democratic nominee said in an interview on CBS Sunday Morning, the first in a series of appearances to highlight the upcoming publication of "What Happened," her memoir about the campaign.If true, Clinton is closing the door on a storied political career that saw her become the first woman presidential nominee