Democratic presidential candidate Hillary  Clinton  appears to be behaving like she might have something to lose in her race to win the Democratic nomination. Photograph: AP Photo/Charlie Neibergall

Hillary Clinton is approaching her presidential campaign with a new abandon. She is showing a more human side by lampooning Republicans on comedy TV a(...)

US Republican presidential candidate Donald Trump speaks at a campaign rally in Keene, New Hampshire. Photograph: Gretchen Ertl/Reuters 0:15

Two days after a gunman killed nine people at an Oregon community college and then shot himself dead , the Republican presidential frontrunner, Donald(...)

US president Barack Obama leaves the podium after speaking on the shooting at Oregon’s Umpqua Community College, at the White House. Photograph: Kevin Dietsch/EPA

US president Barack Obama angrily said on Thursday America had made a “political choice” to allow mass shootings like the one in Oregon to occur and b(...)

Pope Francis addresses a joint meeting of Congress on Capitol Hill in Washington. Photograph: Bloomberg 1:29

Pope Francis, in a first address by a pontiff to the US Congress, made sweeping pleas to a deeply partisan government to embrace immigrants, tackle(...)

Pope Francis addresses a joint meeting of the US Congress in the House Chamber of the US Capitol on Thursday in Washington, DC.  Photograph: Mark Wilson/Getty Images

Pope Francis, in the first address by a pontiff to a joint meeting of the US Congress, urged American lawmakers to embrace new immigrants, tackle clim(...)

‘During the 2008 campaign, when Clinton was being urged to show a more human side, Democratic pollster Mark Penn famously remarked that “being human is overrated”. So too is “authenticity”.’ Above, Clinton with host Jimmy Fallon on the Tonight Show in New York  on September 16th. Photograph:  REUTERS/Douglas Gorenstein/NBC

This week’s Republican presidential debate saw Donald Trump stumble as his rivals found their voice at last, offering the party’s establishment hope t(...)

US vice president Joe Biden has expressed doubt about the likelihood that he would run for president, saying that “I’d be lying if I said that I knew I was there.” Photograph:Andrew Burton/Getty Images.

US vice president Joe Biden has expressed doubt about the likelihood of him runninng for president, saying that “I’d be lying if I said that I knew I (...)

US vice-president Joe Biden: “Can I do it, can my family? There is no way to put a timetable on that.” Photograph: Getty Images

Vice-president Joe Biden has made his most revealing comments on whether he will mount a third presidential bid, saying the decision rests on whether (...)

US vice-president Joe Biden: still weighing up whether his family can cope with the rigours of a national campaign

Hillary Rodham Clinton’s clumsy handling of the controversy over her use of a private email address as secretary of state has left some Democrats unsu(...)

“A lethargic, insubstantial image of Jeb Bush that is at odds with the perky red ‘Jeb!’ campaign logo”. Photograph: Reuters/Jay Westcott

Pity Poppy. When I went down to Houston a few years ago to eat pizza with the former president, he was his usual gracious self, speaking fondly about (...)