Personal finance author Robert Kiyosaki knows a thing or two about President Donald Trump.

Kiyosaki and Trump have authored two books together.  

"I think [Trump] is doing his best to change a very sick system," Kiyosaki said. Kiyosaki is the author of the well-known finance book Rich Dad, Poor Dad, which is celebrating its 20th anniversary this year with some 35 million copies sold.

"My concern is that his changes may disrupt the system and people may blame him if there is a crash [in the markets]," Kiyosaki said.

So far, so good. The S&P 500 is up over 8% since Nov. 9, 2016, the day after Trump's presidential victory. That said, Trump isn't even 100 days into his presidency and has yet to deliver on tax reform and infrastructure spending - two factors that have driven stocks to near record highs over the past few months. 

While Kiyosaki thinks tax reform and infrastructure spending are necessary, he doesn't think those factors will reverse a "compressing" economy. He sees a significant threat from the rise of robots and artificial intelligence. "[Robots] are going to wipe out white collar jobs," he said. 

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