There is a scene in a Godfather film when a Corleone capo turned state witness is about to give evidence to a senate hearing, evidence that would expose how organised crime works.

Finance Minister Paschal Donohoe will stress the need to avoid a hard border on the island of Ireland when he meets key White House officials.

If the US president is impeached, as seems likely, his name will be blackened in history, and the scandal may be as big as Watergate, in 1974, says Elizabeth Drew.

The government's special envoy to the US Congress since 2017 made the announcement today.

Robert Mueller found no evidence that Donald Trump’s campaign ‘conspired or co-ordinated’ with Russia but the stage is set for a new set of political and legal battles, says Andy Sullivan.

Fresh efforts to secure special work visas for Irish citizens in America will go ahead after talks between Taoiseach Leo Varadkar and US president Donald Trump.

Taoiseach Leo Varadkar has told US president Donald Trump that making America great again does not mean forgetting or losing sight of what makes it great already.

The Taoiseach brought forward his departure to last night to avoid being in the air when the crucial votes in the House of Commons take place tonight but is taking a personal day in the States before his formal programme commences.

New York’s Alexandria Ocasio-Cortez, in a world of grey or greyer men and women, radiates charisma and high-energy promise.

Facebook has yet to explain why users were not informed about the Cambridge Analytica data leak when Facebook learned about it, writes Leonid Bershidsky

Facebook will investigate "tens of thousands" of apps to discover if any other companies have accessed data in a similar way to Cambridge Analytica (CA), Mark Zuckerberg has told US politicians.

What was he thinking?, asks Daniel McConnell.

Taoiseach Leo Varadkar will “congratulate” President Donald Trump on bringing America’s tax regime closer to the Irish system when he meets him today.

Key leaders in the peace process have been celebrating 20 years since the Good Friday Agreement was signed.

"The task (of restoring the powersharing institutions) could not be more urgent."

The Taoiseach, Leo Varadkar, is to join actor, Arnold Schwarzenegger, singer, Nile Rodgers, and Bernie Sanders as a speaker at the South by Southwest (SXSW) festival in Texas.

President Donald Trump questioned the impartiality of the deputy director of the FBI, Andrew McCabe, who is planning to retire from the bureau in the months ahead after being buffeted by attacks over alleged anti-Trump bias in the agency.

Pushing my way through the lobby of Google’s European headquarters in Dublin, for an evening meeting, against a hoard of techies from 60 countries exiting the building, was proof enough that there was unlikely to be any sudden change in the status of Ireland as a location for US corporations, writes John Whelan.

US senator Al Franken is facing a storm of criticism and a likely ethics investigation after a radio anchor accused him of forcibly kissing and groping her during a visit to entertain US troops in Afghanistan.

President Donald Trump said efforts to curb North Korea's nuclear weapons programme would be "front and centre" of his two-day visit to South Korea and he projected optimism that the rising tensions could be calmed.

Donald Trump has engaged in a furious exchange of tweets and counter-tweets with a Republican senator, saying he "couldn't get elected dog catcher" while the congressman fired back that the president was "utterly untruthful".

The US Navy has fired two senior commanders in the Pacific region in connection with two ship collisions which resulted in the deaths of 17 sailors.

President Donald Trump's oldest son has arrived on Capitol Hill for a private interview with Senate staff investigating Russian interference in the presidential election.

Handing the immigration hot potato to a chaotic, factionalised majority party on Capitol Hill

Putin’s paranoia, backed by a prolific State propaganda machine, is leaving many in the West nervous about Russia’s future moves, writes Peter Apps.

The co-founder of a Washington opposition research firm that produced a dossier of salacious claims involving Donald Trump has spent hours speaking to Senate investigators in a closed-door meeting.

When Susan Bro spoke at a memorial for her daughter, Heather Heyer, who was murdered by a right-wing extremist in Charlottesville just over a week ago, her powerful response resonated with families on this island who had lost a loved-one to bewildered extremism.

Latest: President Donald Trump has tweeted his thanks to Steve Bannon after the latter left the White House.

President Donald Trump is back in the New York skyscraper that bears his name as anger over his reaction to race-fuelled clashes in Charlottesville, Virginia, over the weekend shows few signs of dying down.

Two members of the US Senate Judiciary Committee have moved to protect special counsel Robert Mueller from being fired by president Donald Trump.

Failure to repeal Obamacare has exposed the fault lines in the US party, write Stephen Peoples and Thomas Beaumont

Donald Trump's former campaign chairman has met Senate investigators, giving his recollection of a Trump Tower meeting with a Russian lawyer and agreeing to turn over contemporaneous notes of the gathering last year, sources said.

Applause and cheers greeted Senator John McCain, who is battling brain cancer, as he returned to the Capitol on Tuesday to vote for moving ahead on legislation to dismantle Obamacare.

US president Donald Trump's son-in-law and adviser Jared Kushner has returned to Capitol Hill for a second day of private meetings with congressional investigators.

Donald Trump has spoken to advisers about sacking his attorney general, as he rages against the legal chief's decision to excuse himself from anything to do with the Russia investigation.

The Republican-led House is to vote on a sweeping Russia sanctions package that defies the White House by demanding Donald Trump gets Congress's permission before lifting or easing penalties against Moscow.

No matter how embarrassing or unpatriotic the US president becomes, his elected officials have jobs to keep and any dissent would be quickly quashed, says Paul Waldman.

Gerry Adams called on the Irish Government to increase its efforts to "secure a positive resolution" for the undocumented Irish living in the US.

Twitter users have latched on to former FBI director James Comey's use of the word "lordy" during his Capitol Hill testimony about his interaction with US President Donald Trump.

US President Donald Trump will not assert executive privilege to try to block testimony by sacked FBI director James Comey, the White House has confirmed.

The Flynn investigation was part of a broader probe into Russian interference in last year's presidential election.

Donald Trump's national security adviser has insisted the US president's revelations to Russian officials about the terrorist threat from Islamic State were "wholly appropriate" and amounted to a routine sharing of information.

Donald Trump has fired FBI Director James Comey during the bureau's investigation into whether the tycoon's campaign had links to Russia's meddling in the presidential election.

President Donald Trump has abruptly fired FBI Director James Comey.