Tomm Pfitzenmaier, Summit Commodity Brokerage, says grains end mostly lower with risk off selling and positioning ahead of President Trump's Liberation Day announcement on tariffs.  Soybean oil was the one exception as its been up the last few days on word of a possible deal to increase the blending mandate for biomass based diesel in the RFS.  Cattle were also higher with live cattle making some new contract highs, while hogs fell on tariff fears.  

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