US intelligence agencies have warned that Russia is attempting to help President Donald Trump get re-elected in November, US media report.
Democratic presidential candidate Mike Bloomberg is paying social media influencers to back him in the hope of reaching younger voters.
The US has launched investigations into Harvard and Yale universities over suspicions they received undisclosed funds from foreign countries, including Saudi Arabia and China.
The number of US troops suffering from traumatic brain injuries (TBI) after an Iranian attack on a US base in Iraq in January has risen to 109, according to US officials.
U.S. job growth accelerated in January, with unseasonably mild temperatures boosting hiring in weather-sensitive sectors, indicating the economy will probably continue to grow moderately despite a deepening slump in business investment.
US President Donald Trump has dismissed two senior officials who testified against him at his impeachment trial.
US President Donald Trump has taken a victory lap one day after his impeachment acquittal, in a tirade against his political enemies.
President Donald Trump has been cleared in his impeachment trial, ending a congressional bid to oust him from office that bitterly divided the US.
President Donald Trump has hailed the "great American comeback" in a speech to Congress that exposed sharp divisions at the top of US politics.
US basketball legend Kobe Bryant and his daughter Gianna are among nine people killed in a helicopter crash in the city of Calabasas, California.
Russia's unmanned Luna-25 spacecraft has crashed into the Moon after spinning out of control, officials say.
Donald Trump has confirmed that he will not take part in Republican presidential debates with his rivals in the race for the White House.