From 1947 to 2001, the American economy grew annually at a rate of 3.5 percent. After China got into the World Trade Organization, got access to our markets and flooded our markets with its illegally subsidized exports, we grew at a rate of 1.8 percent from 2002 to 2015. That's almost cut in half.

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.

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.

From 1947 to 2001, the American economy grew annually at a rate of 3.5 percent. After China got into the World Trade Organization, got access to our markets and flooded our markets with its illegally subsidized exports, we grew at a rate of 1.8 percent from 2002 to 2015. That's almost cut in half.

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.

When China got into the WTO, that allowed it to sell into any other country within the WTO - not just the United States - at the lowest tariffs that country offered. And the other countries could sell into China at the lowest tariffs that China offered. The problem, right off the bat, was that China had much higher tariffs than everywhere else, so the U.S. and Europe in particular got the short end of that stick.

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.