President Barack Obama bows as he is greeted by Japan’s Emperor Akihito during  a previous visit to Tokyo in 2009. He will be in Japan next month for a G7 summit

After less than a year in office, US president Barack Obama famously bagged a Nobel Peace Prize for a thin pledge to build a world without nuclear wea(...)

5th Avenue in New York. The Obama administration – preoccupied with the aftermath of financial crisis and the struggle with bitterly hostile Republicans – has only recently been in a position to grapple with competition policy. Photograph: Chris Goodney/Bloomberg

When Verizon workers went on strike last week, they were mainly protesting efforts to outsource work to low-wage, non-union contractors. But they w(...)

Donald Trump: not since Barry Goldwater has the Republican establishment so railed against a candidate as it has against Trump. Photograph: Shannon Stapleton/Reuters

“I warned that the Republican Party is in real danger of subversion by a radical, well-financed, highly disciplined minority,” the Republican governor(...)

Talk to the Donald hand: Republican presidential candidate Donald Trump speaks during a campaign rally on March 29th in  Janesville, Wisconsin. The state’s primary is on April 5th. Photograph:  Scott Olson/Getty Images

Can Donald Trump do women any more wrong? He is certainly going to try. You would think that since 1920, when women got the vote in US national ele(...)

US president Barack Obama  at the annual Friends of Ireland Lunch at the US Capitol in Washington, with Taoiseach Enda Kenny at the table,  March 15th, 2016. Photograph: Jonathan Ernst/Reuters

US Speaker of the House of Representatives Paul Ryan warmed up Taoiseach Enda Kenny, President Barack Obama and the rest of the audience at his St Pat(...)

California governor Jerry Brown, first lady Michelle Obama and former US president George W Bush, right at Nancy Reagan’s funeral in California. Photograph: Chris Carlson/AP Photo

US first lady Michelle Obama and representatives from nine former presidential families led a bipartisan gathering of politicians and celebrities in p(...)

Democratic presidential candidate Hillary Clinton speaks during a campaign event in Illinois, the US. Photograph: John Starks/Daily Herald via AP

In the days since her death on Sunday, Nancy Reagan has been praised for her work on a range of causes, from preventing drug abuse to supporting resea(...)

US Speaker of the House Paul Ryan  outside the US Supreme Court  in Washington DC. File photograph: Kevin Lamarque/Reuters

When the speaker of the US House of Representatives Paul Ryan welcomes acting Taoiseach Enda Kenny and president Barack Obama at the St Patrick’s Day (...)

  Dr Arthur Laffer

Donald Trump would make a great US president because he can’t be bought, says US economist Arthur Laffer. The Republican Party stalwart and low-tax (...)

Republican presidential candidate Donald Trump: “The most enjoyable thing about the Trump phenomenon has been watching him make monkeys out of a lot of people who had it coming.”   Photograph: Robert F Bukaty/AP

Here’s why the Trump campaign is wicked fun: I watched Donald Trump in New York for decades, as a bachelor swanning, a party fixture mingling, a maste(...)