Facebook plunged to its worst loss in four years on Monday and led a rout in technology companies.

Parents, teachers and students affected by school shootings over the past two decades have met President Donald Trump as the White House sought to show resolve against gun violence.

Donald Trump's personal lawyer has filed a defamation lawsuit against BuzzFeed for publishing an unverified dossier of allegations about the president's White House campaign and Russia.

The publication of a controversial dossier about President Donald Trump's alleged links with Russia, authored by a former MI6 spy, has already resulted in a death, it has been claimed.

A senior US politician has released a transcript from an interview with the co-founder of the firm that commissioned a dossier of allegations about President Donald Trump's ties to Russia.

A lawyer for White House adviser Jared Kushner has pushed back after a Senate committee said he had not been fully forthcoming in its probe into Russian election interference.

The top US Republican and Democrat on the Senate Judiciary Committee have said President Donald Trump's son-in-law has not been fully forthcoming with the panel's probe into Russian election interference.

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.

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.

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.

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.

US president Donald Trump has defended his son's meeting with a Russian lawyer, saying it was standard campaign practice and maintaining "nothing happened" as a result.

US President Donald Trump has addressed the controversy over his eldest son's meeting with a Russian lawyer during last year's presidential campaign.

The chairman of the Senate Judiciary Committee said he is sending a letter to Donald Trump Jr to ask him to testify.

Congressional investigators plan to question the former chairman of the Trump campaign and will subpoena him if necessary, the Senate Judiciary Committee panel's chairman has said.

Here's your morning news bulletin.

The special counsel appointed to investigate Russian influence in the 2016 US presidential campaign is now examining whether Donald Trump tried to obstruct justice, according to a report.

So far 14 people have emerged as candidates to replace fired FBI Director James Comey.

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.

A couple who massacred 14 people at a holiday party in California were discussing martyrdom online a year before they met in person and married, FBI director James Comey said.

President Barack Obama’s nominee for attorney general has defended her office’s handling of a money-laundering investigation involving British bank HSBC.

America’s National Security Agency reported its own breaches of surveillance rules to an intelligence court and repeatedly promised extra measures to prevent similar incidents, newly-declassified phone-tap files have revealed.

Few things would be as surprising as the sight of JPMorgan (JPM) Chase & Co pleading guilty in a criminal case. Yet this could be a real possibility, if we are to believe recent news reports about the bank’s settlement negotiations with the Justice Department.

The US Senate has overwhelmingly confirmed James Comey as FBI director, elevating the one-time Justice Department official who defied efforts by George Bush’s White House to renew a warrantless eavesdropping programme.

The CIA has confirmed it wanted one of the Boston bombing suspects placed on a terrorist database 18 months ago.

Rock legends Steven Tyler and Mick Fleetwood have convinced a Hawaii Senate committee to approve a bill to protect celebrities from intrusive paparazzi.

A gunman in the US has shot dead a school bus driver, taken a six-year-old boy hostage and gone to ground surrounded by armed police.

Thousands of people joined a rally for gun control in the US capital Washington, just days before the Senate begins debating new measures proposed by President Barack Obama.

Prominent gun rights advocates in the US government are now calling for a national discussion about curbing gun violence - signalling that the Connecticut primary school massacre could be a tipping point in a debate dormant for years.

AT least 122 firearms from a botched US undercover operation have been found at crime scenes in Mexico or intercepted en route to drug cartels there, according to a Republican congressional report issued last night.

Republican plans to widen Arizona's controversial illegal immigration crackdown by making hospitals check whether patients are in the US legally have enraged medical professionals who fear becoming de facto government agents.

US Supreme Court nominee, Elena Kagan, has moved a step closer to becoming President Barack Obama’s second appointee to the court after winning the approval of the Senate Judiciary Committee.

US President Barack Obama said he wanted to know “whose ass to kick” over the Gulf of Mexico oil spill, adding to the pressure on energy giant BP as it tried to capture more of the leak from its gushing well.

DISENCHANTED voters in both parties turned against the establishment, choosing a conservative “Tea Party” newcomer over a handpicked Republican favourite and dumping veteran Democratic Senator Arlen Specter ahead of November’s midterm elections.

PUSHING toward a historic Supreme Court confirmation vote, the Senate Judiciary Committee yesterday approved Judge Sonia Sotomayor to be the first Hispanic justice, after nearly unanimous Republican opposition.

US JUDGE Sonia Sotomayor said yesterday neither President Barack Obama nor anyone else in the administration asked her views on abortion rights before she was nominated for the Supreme Court.

US Attorney General Eric Holder said today there may be 50 or more trials of Guantanamo Bay detainees as the Obama administration works to shut the US detention centre by early next year.

The FBI is investigating more than 500 cases of corporate fraud amid the financial meltdown, it revealed today.

THE first black man elected US president is poised to name Washington lawyer Eric Holder as the nation’s first black attorney general — a historic appointment, but one with some potential political problems over a 2001 pardon.

Veteran US Senator Patrick Leahy will be honoured with an award from Irish academics today for his contribution to politics.

The husband of Alaska governor and John McCain’s running mate Sarah Palin has refused to give evidence in the “Troopergate” investigation of his wife’s alleged abuse of power.

OIL prices are staying stubbornly high and governments internationally are struggling to deal with this increasingly worrying trend.

Controversial US attorney general Alberto Gonzales has announced he will resign his position as the United States’ top law enforcement official.