Since the crushing defeat of the Republicans in the midterm elections, Donald Trump has been widely labelled as a lame duck.

But is he, or will he be more Trumpian than ever?

Dr Michael Green, CEO at the United States Studies Centre, spoke to the ABC News Daily program about why Trump's elevation of Stephen Miller to his chief of staff should act as a warning sign of what's to come and what the midterm result will mean for Australians.