Chicago soybean futures are approaching a four-year low due to expectations of a large crop in Brazil and a drop in soyoil prices caused by a proposed U.S. biofuel policy change. Wheat prices are steady, with a slight decrease in Chicago wheat as traders consider global crop conditions. Corn is consolidating ahead of the U.S. Federal Reserve interest rate announcement. Soybeans are also being affected by concerns over potential shifts in demand from biodiesel due to the proposed biofuel policy. Additionally, the forecast for Russia's wheat production has been reduced due to poor crop conditions, but positive harvests in Argentina and Australia, along with improved crop conditions in the northern hemisphere, are also factors.