It is always difficult to trade grain and soy futures based on politics and political rhetoric, and this truism is proving itself once again. Markets were lower yesterday on discouraging comments from various sources about the state of U.S.-Chinese negotiations. They were then buoyed early today by comments from President Trump’s economic advisor Larry Kudlow that those negotiations are on track and progress is being made ahead of next week’s formal meeting with Vice-Premier Lui He and his delegation. Understandably, markets have become heavily invested in the outcome of this meeting, perhaps to the exclusion of a few other important factors like unfavorable Brazilian weather forecasts. One unsubstantiated rumor in the air is t...