The U.S.-China trade war: How it began, and how it could end

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President Trump is threatening to increase tariffs on Chinese products, and slap duties on more tariffs, if the U.S. and China do not reach a new trade deal soon. Ali Velshi looks at what led to the trade war and what happens next with NPR Investigative Correspondent Laura Sullivan, who reports a new “Frontline” special titled “Trump’s Trade War,” and Oxford University economist Linda Yueh.