Senator Thad Cochran celebrates with supporters at a victory party in Jackson, Mississippi. Photograph: Edmund D Fountain/The New York Times

The latest win by the US Republican Party mainstream over the insurgent conservative wing – a narrow victory by veteran Mississippi senator Thad Co(...)

Former US treasury secretary Henry Paulson called for a national tax on carbon emissions to encourage conservation. Photograph: Manuel Balce Ceneta/AP Photo

On Sunday, Henry Paulson, the former US treasury secretary and a lifelong Republican, had an op-ed article about climate policy in the New York Times.(...)

US House majority leader Eric Cantor (above) has  lost his seemingly-safe primary to David Brat, a Tea Party-affiliated political novice with a strident anti-immigration message - an upset that could have major implications for the push to overhaul immigration in Congress. Photograph: Doug Mills/New York Times

The second-highest ranking Republican in the US House of Representatives was beaten by a hard-right Tea Party candidate in a shock result in the lates(...)

Brendan Boyle (right) with his brother Kevin, speaker of the Pennsylvania House of Representatives, and their father, Frank, who is from Donegal.

The son of a Co Donegal emigrant was among the winners picked to lead their parties in the US midterm elections in November as primary voters in six s(...)

EU foreign policy chief Catherine Ashton and Iran’s foreign minister Mohammad Javad Zarif at the start of talks in Vienna yesterday. Iran and six world powers began a new round of negotiations aimed at settling the dispute over Tehran’s nuclear programme by late July. Photograph: Heinz-Peter Bader/Reuters

Iran defended its nomination as ambassador to the United Nations yesterday after hawks in the US senate passed legislation to ban the official (...)

  Republican congressman Eric Cantor  with Israel’s prime minister Benjamin Netanyahu. In 2012, Mr Cantor famously commemorated Labor Day with a Twitter post honouring business owners. Photograph: Amos Ben Gershom GPO via Getty Images)

It seems safe to say Capital in the Twenty-First Century , the magnum opus of the French eco(...)

Paul Ryan, chairman of the House budget committee and the GOP’s de facto intellectual leader, is an expert at sounding like he knows what he’s talking about. Photograph: Reuters

So it’s comical, in a way, to see Ryan trying to explain away some recent remarks in which he attributed persistent poverty to a “cultur(...)

Republican senator Marco Rubio: “Republicans are in a deep sense enemies of America’s poor. And that will remain true no matter how hard the likes of Paul Ryan and Marco Rubio try to convince us otherwise.” Photograph: Reuters

Suddenly it’s okay, even mandatory, for politicians with national ambitions to talk about helping the poor. This is easy for Democrats, who can go bac(...)

A biker rides past the US Capitol  in Washington DC, yesterday. With the government shutdown going into the 14th day and the deadline for raising the debt ceiling fast approaching, Democrats and Republicans are still in a stalemate. Photograph: Mark Wilson/Getty Images

So you have this neighbour who has been making your life hell. First he tied you up with a spurious lawsuit; you’re both suffering from huge legal bil(...)

How awful are Ted Cruz and his Cruzettes? They have done the impossible. They have made Americans look back at the Bush II era, the most reckless wrec(...)