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.

Unfair trade practices drive up rents for younger people. They will drive up home prices for first-time home-buyers. So it's not just that we're losing jobs and factories. We're giving away our homes, our businesses, our companies, our technologies.

The really big problem with China is that there are the unfair trade practices, like currency manipulation, illegal export subsidies and the theft of intellectual property, but then there's also things that the WTO doesn't cover that it should, which is the use of sweat shops and pollution havens.

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.

When we run these big trade deficits and send our jobs offshore, we hold our wages down and our income down. That feeds right back into the biggest part of this whole equation, consumption. This drags GDP down as well.

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.