Markets opened Sunday evening with wheat 3-4 cents higher, corn up a penny and soybeans a penny lower. Overnight volume was much better than last week. Markets then opened this morning with wheat up 5-6 cents, corn slightly lower and soybeans down 6-7 cents. Soybean futures, however, ran into heavier-than-expected selling shortly afterward and eventually traded down more than 20 cents before closing with losses near that amount. Corn traded 2-3 cents lower and finished that way. Wheat, meanwhile, held its independence and traded higher the entire session. Presidents Trump and Xi are scheduled to have dinner Saturday evening in Argentina after the conclusion of the G-20 meeting. U.S. financial markets seemed cautiously optimistic that there...