Soybean futures fell Friday after the US Department of Agriculture boosted its outlook for harvests.<br /><br />Business Insider says soybean prices have been under pressure amid an ongoing trade war between the US and China. China is the world's largest soy importer. <br /><br />The US tariffs against China include a 25% import tax on soybeans, making American soybeans more expensive for one of its biggest customers. <br />