Trump advisor refuses to leave CNN set

US President Donald Trump's senior advisor Stephen Miller refused to leave the set of CNN's State of the Union after his contentious interview with host Jake Tapper, and had to be escorted out by security, a source for the network says.

"The segment was over and Mr. Miller was politely asked to leave the set multiple times. After refusing to leave, he was escorted out by security," said a CNN source.

Miller had just completed the interview with Tapper, who cut him off at the end.

As Miller tried to defend Trump and refute the portrayal of him in the book Fire and Fury: Inside the Trump White House, Tapper said, "There is one viewer that you care about right now. And you're being obsequious, you're being a factotum in order to please him."

Tapper had been asking questions about Trump's fitness, and queried Miller about a weekend tweet in which Trump wrote that he was a "very stable genius".

A White House spokesperson disputed the report, and said that Miller left the network on his own free will.