Grain and soy markets tried to generate a “Turnaround Tuesday” during the overnight session but struggled to hold on to minor gains. This difficulty was a signal that Tuesday might be a tough day for the markets, and so it was. Markets assume that China has purchased 5 MMT of soybeans for the state reserve, but they have become tired of rumors that it is interested in corn, wheat, pork and other ag commodities. News that three tankers with crude oil destined to China had sailed from U.S. Gulf terminals was not enough to sustain the market’s faith in stories of Chinese demand. Then along came U.S. Trade Representative (USTR) Robert Lighthizer complaining about the lack of progress in negotiations with China over intellectua...