Overnight trading saw soybean prices open higher on a rebound, then slip lower under more selling pressure while the grains hung on to trade marginally on both sides of Tuesday’s closes. An early rally attempt was quickly aborted. General Comments The Chinese soybean delegation and U.S. exporters signed frame agreements for the purchase of 4 MMT of U.S. soybeans valued at $1.8 billion in Indianapolis last night. This has been an annual public relations exercise to remind everyone, U.S. politicians included, of just how important China is to the U.S. ag economy. As noted here before, these annual frame agreements make for good press, but they cover purchases that Chinese buyers know they will be making and thus do not really add to the ult...