Trump biographer warns that Trump really thinks he can be president in '14-years'

On Tuesday, Trump biographer David Cay Johnston warned that Americans should take President Donald Trump's jokes seriously.

While interviewing with CNN's Chris Cuomo, Johnston said that Trump is acting as if he is a dictator. He said that Trump's team is being "very careful" how they go about the battle of release Trump's tax returns in an effort not to break the law.

"They're being very careful not to violate the law," Johnston said. "The IRS commissioner who is a tax lawyer sent a letter saying they referred this to the Justice Department. Of course, the IRS has its own legal shop. It's called the chief counsel but all they're doing is trying to avoid directly violating the law which would subject them to the risk of criminal prosecution and prison."

He then said that Trump truly thinks he can be the president for 14 years.

"He is moving to turn this country into a Trump dictatorship. He said just the other day 'when I'm president 14 years from now' and some people take it as a [joke], but he is saying that because he's thinking about how do I make it," he said.

Watch below via CNN: