The idea that  Trump could carry Republican hopes and lead the party of Abraham Lincoln into November’s election  is now a very real prospect. If he wins in the Iowa caucuses next Monday, it could be difficult to stop him. REUTERS/Scott Morgan

Cast your mind back seven months to that moment Donald Trump descended that escalator at Trump Tower into the presidential race to the strains of Neil(...)

US president Barack Obama leaves the stage after a news conference at the conclusion of his visit to Paris, for COP21. Photograph: Benoit Tessier/Reuters

President Barack Obama’s prominent role during the first two days of the COP21 UN climate change conference will help to consolidate his legacy as a (...)

A Democratic Party supporter in Louisville takes down a sign supporting Jack Conway, the defeated candidate in the Kentucky governorship election. Photograph: Philip Scott Andrew/The New York Times

A California state politician, a Democrat from the San Francisco Bay area, wants a Bill passed that would allow people to take selfies while castin(...)

Former US senator Fred Thompson. Photograph: Jim Watson/AFP/Getty Images

Fred D Thompson, a former US senator, actor and Republican presidential candidate, died on Sunday in Nashville, Tennessee. He was 73. The cause was a(...)

 US president Barack Obama announcing a  plan  to reduce greenhouse gas emissions from  coal-burning power plants. Photograph: Mark Wilson/Getty Images

The Obama administration has vowed to override states that refuse to accept its new climate goals by mandating how they should achieve emissions cuts,(...)

 President Barack Obama:    far more energised than a couple years ago when  he acted as though he would like to quit, if it was a job you could stride away from. Photograph: Yuri Gripas/Reuters

In the midst of Iran mania, the president got tossed a question about Bill Cosby. Would he revoke the presidential Medal of Freedom given to a comedia(...)

The US authorities have moved partially to undo the broad surveillance powers acquired in the wake of the 9/11 attack 14 years ago. The passage throug(...)

The US government’s bulk collection program was first revealed by documents obtained by the former NSA contractor Edward Snowden

The US Senate on Tuesday passed a bill that would end the bulk collection of millions of Americans’ phone records, the most significant surveillance r(...)

Senate majority leader Mitch McConnell: wanted the Patriot Act’s bulk collection to be extended for another five years Photograph: Chip Somodevilla/Getty Images

So what spying powers has the US lost? The National Security Agency’s legal authority to collect the phone records of millions of Americans, part of t(...)

Interviews with US law enforcement and intelligence officials  suggest there are multiple workarounds to a gap in intelligence that has opened up  due to a lapse in US counterterrorism laws. File photograph: Pawel Kopczynski/Reuters

For the first time since the aftermath of the terrorist attacks of September 11th, 2001, Americans will again be free to place phone calls to friends,(...)