US  presidential candidate Donald Trump at Manhattan Supreme Court in New York on Monday, where he appeared for jurty duty. Trump’s  hard line on immigration has driven rivals to match his biting anti-immigrant language. Photograph: Lucas Jackson/Reuters

Republicans thought they had learned a lesson after 2012: Turning off Latino voters ensures defeat in the general election. But as the disruptive US p(...)

The furious reaction from the American right and vested interest groups to President Barack Obama’s dramatic announcement of his Clean Power Plan last(...)

US presidential candidate  and businessman Donald Trump. Photograph: Brian Snyder/Reuters

Embattled Republican presidential candidate Donald Trump has hit back at critics who say he went too far with caustic comments about a US television n(...)

Donald Trump and Jeb Bush participate in a debate of ten leading Republican presidential hopefuls at the Quicken Loans Arena in Cleveland. Photograph: Doug Mills/The New York Times

The first question to Chris Christie was about the nine credit downgrades that New Jersey had suffered since he became its governor. Ben Carson was(...)

US presidential candidate Donald Trump waves from his car  in Laredo, Texas, on July 23rd, where he had difficulty summoning details when pressed on how he would fix the immigration system. Photoghraph: Tamir Kalifa/The New York Times

The most pressing question that Donald J Trump could face next week in the first debate of the US 2016 presidential race may not be about Iran or immi(...)

Ahead of the field: Donald Trump in Texas on Thursday. He said he’s confident of winning the Hispanic vote. Photograph: Matthew Busch/Getty

On Tuesday the Republican senator Lindsey Graham, one of 16 candidates seeking his party’s presidential nomination in the 2016 US elections, appear(...)

Donald Trump has infuriated Republicans by criticizing fellow members of the party and made many of them uncomfortable with harsh remarks about illegal immigration and other issues. Photograph: Joshua Lott/The New York Times

US presidential hopeful Donald Trump persisted in his attacks on fellow Republicans on Tuesday, calling US Senator Lindsey Graham an “idiot” and givin(...)

Donald Trump: asked whether John McCain was owed an apology, Mr Trump told ABC talk show This Week: “No, not at all.” Photograph:  Joshua Lott/New York Times

Republican presidential candidate Donald Trump has stirred controversy again after questioning the war record of Republican senator John McCain, a fo(...)

 President Barack Obama: stressed that there was no alternative to the deal. Photograph: Getty Images

The tough negotiations leading to a nuclear deal with Iran may have concluded in Vienna, but the hard work on selling the agreement to sceptical Repub(...)

President Barack Obama, with Vice President Joe Biden, at a press conference in response to the Iran nuclear deal. Photograph; Andrew Harnik/Getty Images

US president Barack Obama faces stormy weeks ahead as he must convince fellow Democrats and Republicans at home and disgruntled allies in the Middle E(...)