U.S. Ambassador to China Terry Branstad, left, with U.S. Treasury Secretary Steven Mnuchin, U.S. Trade Representative Robert Lighthizer, and Chinese Vice Premier Liu He, right, after concluding a meeting at the Diaoyutai State Guesthouse in Beijing, in May.

U.S. Ambassador to China Terry Branstad, left, with U.S. Treasury Secretary Steven Mnuchin, U.S. Trade Representative Robert Lighthizer, and Chinese Vice Premier Liu He, right, after concluding a meeting at the Diaoyutai State Guesthouse in Beijing, in May.