As the trial of Donald Trump's former campaign chief heats up, is the collusion probe even the biggest legal threat for the president? <br /><br />Here the US President’s former adviser Sam Nunberg and Elizabeth Holtzman, who helped impeach Nixon, give their thoughts on how likely Donald Trump is to be impeached.<br /><br /><br />Newsnight is the BBC's flagship news and current affairs TV programme - with analysis, debate, exclusives, and robust interviews. <br /><br />Website: https://www.bbc.co.uk/newsnight<br />Twitter: https://twitter.com/BBCNewsnight<br />Facebook: https://www.facebook.com/bbcnewsnight
