“Tension between the U.S. and China is about to get more complicated, with the World Trade Organization ready to investigate President Donald Trump’s tariffs on $250 billion worth of Chinese goods.

On Monday, the Geneva-based arbiter of trade disputes is likely to begin an inquiry into whether the U.S. duties violate a requirement that all WTO members give each other the same tariff treatment, as China asserts.

The investigation comes at a delicate moment between the world’s two largest economies. A new round of trade talks is scheduled to begin on Jan. 30, and if a deal isn’t reached by March 1, the Trump administration has threatened to raise the tariff rate on more Chinese goods to from 10 percent to 25 percent.”

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