The U.S. Department of Justice has begun a criminal investigation into Uber Technologies Inc's use of a software tool that helped its drivers evade local transportation regulators, two sources familiar with the situation said.

Facebook Inc (FB.O) will hire 3,000 more people over the next year to speed up the removal of videos showing murder, suicide and other violent acts, in its most dramatic move yet to combat the biggest threat to its valuable public image.

FBI Director James Comey has said it makes him "mildly nauseous" to think that he could have had an impact on the US presidential election.

The Trump administration is discontinuing a signature girls education initiative championed by former first lady Michelle Obama, according to officials.

What the US president says in public about other countries has been a major part of international diplomacy for the last 100 years.

Facebook Inc acknowledged on Thursday that it has become a battleground for governments seeking to manipulate public opinion in other countries and outlined new measures it is taking to combat what it calls “information operations” that go well beyond the phenomenon known as fake news.

U.S. Chief Justice John Roberts took issue on Wednesday with the Trump administration's stance in an immigration case, saying it could make it too easy for the government to strip people of citizenship for lying about minor infractions.

The White House has told a US congressional committee it will not comply with a request to release files related to a controversial former aide.