USDA seems to never cease disappointing some traders’ expectations. USDA characterized its December WASDE report as containing “minor” changes, and that is an apt description. This report involved a few tweaks, but nothing that reflected all of the jockeying in the market ahead of time. Moreover, the confusion over appropriate valuation then continued after the report was released.  Cornfusion: The March corn contract opened the session down, then fluttered one to three cents higher until the report was released. While there was no change in the U.S. corn disposition, USDA raised global ending stocks. This caused the contract to go negative and then it again fluttered around a penny or two higher before shooting up 4...