America's first black billionaire and founder of the BET television network doesn't believe any of the current Democratic challengers are capable of defeating Donald Trump in 2020.Bob Johnson told CNBC that the president "has always been at a position" where the election is "his to lose".

The congressional committee beginning Donald Trump's impeachment hearings next week has given the president a deadline to answer whether he intends to call witnesses and offer evidence.The House Judiciary Committee is scheduled to begin its hearings on 4 December, when legal experts will discuss the Constitutional grounds for impeachment, considering whether the president's alleged abuses of power in his dealings with Ukraine in exchange for politically damaging information on his rivals constitutes "high crimes and misdemeanours".