Trump Impeachment: Senators clash over rules as the trial opens

The US Senate has started the historic impeachment trial of President Donald Trump amidst an "acrimonious scene" among the Senators from the ruling Republican party and the opposition Democrats over the rules of the game.

The impeachment trial began on Tuesday and comes nearly a week after the House of Representatives, where the Democrats enjoy a majority, voted to send articles of impeachment against President Trump to the Senate.