US Republican senator Ted Cruz: he pushed his party to force a government shutdown in 2013 in an unsuccessful bid to deny funding to the Affordable Care Act, drawing the disapproval of Republican leaders and praise from the grassroots Tea Party. Photograph: Nicholas Kamm/AFP/Getty Images

Texas senator Ted Cruz, who has frequently clashed with leaders of his Republican Party, will announce on Monday that he plans to run for president, (...)

Activists protest near the Manhattan apartment of billionaire and Republican financier David Koch last June in New York City. The demonstrators were protesting against the campaign contributions by the billionaire Koch brothers. Photograph: Spencer Platt/Getty Images

With just 646 days to go, the 2016 US presidential race is already starting up and the ring is packed with various Republicans vying to prove who is t(...)

Barack Obama’s  policy shift on Cuba shows a more determined leader who is working through his promised agenda before his term ends. Photograph: Pete Souza/Reuters

US president Barack Obama’s decision to radically shift US policy toward Cuba is the latest and most striking example of a president unleashed from th(...)

American aid worker Alan Gross, a former Cuban prisoner released on humanitarian grounds, speaks at a news conference with his wife Judy Gross in Washington DC yesterday. Photograph: Andrew Harrer/Bloomberg

President Barack Obama said the US has chosen to “cut loose the shackles of the past” by normalising relations with Cuba and re-opening economic ties(...)

Former Florida governor Jeb Bush. He  is the first Republican to announce formally that he is exploring a candidacy. Photograph: Andy Jacobsohn/Getty Images

Jeb Bush, the son and young brother of former US presidents, has fired up the next race for the White House by announcing that he will “actively ex(...)

Former US president George W Bush speaks at the launch his new book, “41: A Portrait of My Father”, at the George Bush Presidential Library Center in College Station, Texas. Photograph: Mike Stone/Reuters

George W Bush, the 43rd president, unveiling his new biography of his father, 41st president, George HW Bush – a book he describes as “a love story” –(...)

Republican Bruce Rauner gives a thumbs-up after winning the midterm elections in Chicago, Illinois, November 4th, 2014. Photograph; Jim Young/Reuters

If you landed from space this week you might think the United States Capitol in Washington, DC, encased in a new grey cocoon of scaffolding erected to(...)

Peshmerga fighters at Mosul Dam in northern Iraq, which Iraqi and Kurdish forces recaptured with the help of US air strikes. Photograph: Reuters/Youssef Boudlal

For weeks, Capitol Hill in Washington, DC, has watched United States military engagement in Iraq with quiet unease: Democrats and Republicans warily b(...)

US Republican senator Marco Rubio: highlighted age difference between Hillary Clinton and him. Photograph: Hans Deryk/Reuters

Marco Rubio, a Republican senator from Florida, has attacked Hillary Clinton, saying she would be a flawed “20th century candidate” for the presidency(...)

Karl Marx: Obamacare and climate change policy are among the initiatives branded ‘Marxist’ by US conservatives. Photograph: Henry Guttmann/Getty Images

Everywhere you look these days you see Marxism on the rise. Well, okay, maybe you don’t – but conservatives do.If you so much as mention income inequa(...)