Attempts within Republicanism to mount an anti-Trump campaign appear unlikely to succeed - the party has been hijacked by its own members. REUTERS/Randall Hill

Stephen Colbert, host of the US’s Late Show, a mix of chat and satire, the other night warned his audience that Donald Trump might actually w(...)

Donald Trump: criticised in tweets by Democratic mayor of New Jersey and Republican former governor of New York.   Photograph: Erik S Lesser/EPA

Businessman Donald Trump, the poll leader in the race to be Republican presidential nominee, has drawn fire again by claiming that “thousands and t(...)

Presidential candidate Donald Trump, Senator Marco Rubio and Ben Carson during the Republican Presidential Debate in Milwaukee, Wisconsin. Photograph: Scott Olson/Getty Images

Donald Trump clashed with rivals, former Florida governor Jeb Bush and Ohio governor John Kasich in the Republican Party’s fourth presidential debate (...)

Paul Ryan said he was willing to shape the Republican Party into a “proposition party”, shifting away from the opposition and internal strife that has hurt the party in recent years. Photograph: Jonathan Ernst/Reuters

The 2012 Republican vice-presidential candidate Paul Ryan has given divided Republicans until tomorrow to decide whether they will unite behind him as(...)

House majority leader Kevin McCarthy and his wife Judy walk out of the caucus room after he announced  he will not be a candidate for Speaker of the House. Photograph: Chip Somodevilla/Getty Images

Chaos descended on the US Capitol yesterday after Republican Kevin McCarthy, in a shock move, withdrew his name in the race to become the next Speaker(...)

Pascal Saint-Amans, director of the Centre for Tax Policy and Administration at the Organisation for Economic Co-operation and Development.

The new global template for taxing multinationals could lead to more corporation tax being collected by Ireland, according to the head of the team beh(...)

John Boehner, a Republican from Ohio, will resign as speaker of the House  of Representatives next month. Photograph: Andrew Harrer/Bloomberg

US House of Representatives Speaker John Boehner, who has struggled with repeated rebellions from the more conservative wing of his Republican Party, (...)

Some observers believe a public country-by-country reporting regime for multinationals will eventually be put in place. Photograph: Getty Images

Ireland is to become one of the first countries to introduce measures aimed at ensuring multinationals disclose more information to tax authorities. (...)

Republican presidential hopefuls Donald Trump (left) and Jeb Bush high five during the Republican presidential debate at the Ronald Reagan Presidential Library in Simi Valley, California. Photograph: Frederic J Brown/AFP/Getty Images

Republican frontrunner Donald Trump drew fire from rivals during the party’s second presidential debate over his campaign insults with Carly Fiorina, (...)

The Google snippet of the official Sinn Féin website. Photograph: Google

Sinn Féin says it is looking to change the text of its website’s Google search preview, which says the party is considered the “political arm of the I(...)