Donald Trump is not a protectionist. If he imposes tariffs on China or any other country that cheats, all he wants to do is defend America against unfair trade practices.

If you've been to China, you know there are over 100 cities in China, and the pollution levels are just horrific - 60,000 people a year die in Chinese factories and facilities, because they don't have any safety regulations. It's a carnage; it's Dickensian.

As soon as one bad actor like China massively cheats, they win at the expense of us; they win at the expense of Europe and over time it threatens the entire integrity of the global financial system and the global trading system.

We're going right down the toilet, and it's a made-in-China toilet. I teach MBAs. And I noticed, starting a few years after China joined the World Trade Organization, that a lot of my students were no longer employed. They were still coming to get their MBA, but they'd lost their jobs.

No one should be surprised just because somebody isn't successful 100 percent of the time.

Donald Trump understands China influence. He's been talking about it since 1980. He understands it. The people that are on the other side of this, including his opponent, Hillary Clinton, have been part of every bad trade negotiation we've had since 1993.

The policy goal is to persuade China to stop cheating. But here's what's interesting - Donald Trump intuitively understands what things should be. I did a study in 2008 where I estimated the impact of China's unfair trade practices on their competitive advantage - the so-called China Price. You know what it came out to be? Forty-three percent. Forty-three percent - very close to what his intuition said we needed in order to equalize things.