Pfizer, the maker of Viagra, is set to merge with Irish-based Allergan, the maker of Botox

Pfizer and Allergan were racing to put the finishing touches to the biggest healthcare deal in history on Sunday afternoon, as the pair prepare to unv(...)

House speaker John Boehner  announces his resignation: he decided to act following the “awesome sight” of the pope’s historic address to congress. Photograph: Jonathan Ernst/Reuters

The Republican speaker of the House of Representatives John Boehner surprised colleagues and the wider political establishment in Washington by annou(...)

A sign outside the car park in Rosslyn, Arlington, Virginia, where journalistic source Deep Throat met Washington Post reporter Bob Woodward six times between October 1972 and November 1973.

The din of passing traffic spills down an air vent from the street above, while water drips in a corner. Every sound, from the footsteps of a perso(...)

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(...)

Kevin McCarthy (49) has been promoted to the role of majority leader in the lower chamber of the US Congress. Photograph: Jim Lo Scalzo/EPA

The third most senior Republican in the House of Representatives Kevin McCarthy has been promoted to the role of majority leader in the lower chamber(...)

Tanaiste Eamon Gilmore:  said he did not want to overstate the prospect of US immigration reform happening. File Photograph:  Brian Lawless/PA Wire

Tánaiste and Minister for Foreign Affairs Eamon Gilmore has said he is “reasonably optimistic” the US Congress would pass immigration reform helping (...)

Tánaiste and Minister for Foreign Affairs  Eamon Gilmore to lobby on behalf of estimated 50,000 Irish illegal immigrants in US. Photograph: Dara Mac Dónaill

June 17th was one of the hottest days of 1864, when flames engulfed a laboratory at the Washington Arsenal. Two dozen women and girls, mostly Irish im(...)

Republican congressman Paul Ryan: due to meet Tánaiste Eamon Gilmore to discuss immigration reform. Photograph: Chip Somodevilla/Getty Images.

Tánaiste and Minister for Foreign Affairs and Trade Eamon Gilmore arrives in Washington today for two days of meetings with US politicians in the Gov(...)

Cantor bad, Brat worst

Commentators had already begun to talk somewhat prematurely of the US Tea Party as a force in decline, past its moment of critical influence. In the p(...)

Eric Cantor: congressional primary loss has emboldened the Republican right and enabled Democrats to accuse the rival party of being in such disarray it cannot even guarantee the re-election of one of its leaders. Photograph: Reuters/Jonathan Ernst

The shock waves from the defeat of the second highest-ranking Republican in the House of Representatives in a primary election will be felt far beyond(...)