Trump calls pro-impeachment Republican 'total lightweight'

Donald Trump on Sunday dismissed as "a total lightweight" the Republican lawmaker who a day earlier became the first member of the party to call publicly for the US president's impeachment. Michigan Representative Justin Amash -- a staunch libertarian on the right of the party -- declared that any other person would have been prosecuted over Trump's multiple attempts to thwart Special Counsel Robert Mueller's report into Russian election interference.