Quality continues to be an important soybean marketing issue. This report summarizes current knowledge on the following soybean quality topics: o Protein and oil composition of the 2002 U.S. soybean crop o The 2002 crop in historical perspective o Factors affecting soybean quality o Genetic modifications o Amino acid composition of the 2002 U.S. soybean crop The data and analyses in this report are intended to assist customers in the sourcing and use of U.S. soybeans.