Grains are mixed early with livestock higher.  Randy Martinson, Martinson Ag, says soybeans are seeing profit taking on South American weather and despite another 7.3 million bu. of export business this morning, Corn and wheat are following soybeans with a higher dollar serving as a headwind.  Cattle are recovering but need to close higher to negate yesterday's reversal.  There is talk APHIS will release guidance on when the Mexican border will open to feeder cattle later today.