Libertarian presidential candidate Gary Johnson told The New York Times in an interview Tuesday that GOP nominee Donald Trump is too authoritarian for his taste, and even agreed to a description of the billionaire businessman as a "fascist."

Trump doesn't have much respect for the Constitution, Johnson said, adding that he agrees with the assessment of his running mate, former Massachusetts Gov. William Weld that Trump's plan to deport illegal immigrants reminds him of the Kristallnacht attack on Jews before the start of World War II.

When Times interviewers asked Johnson whether he considers Trump to be a fascist, Johnson said he does.

"It walks like a duck, quacks like a duck," he said. "Where's the Constitution in all this?"

Trump is "saying horrible things," Johnson told the Times.

Johnson is polling at about 9 percent in the latest Real Clear Politics average of polls, six points below the 15 percent needed to make the debate stage with Trump and Democratic nominee Hillary Clinton.

He also attacked Clinton and her family foundation, saying it used a "pay for play" model to provide access to wealthy foreign donors when Clinton was secretary of state.