Grains look toward a firmer open in follow up from a positive finish on Friday. Possible disruptions could come from any major changes in the situation with President Trump deploying the National Guard as immigration policy protests erupt in Los Angeles. Traders will otherwise have some optimism over the trade meeting with China. Positions will be prepared for the Thursday crop report. In the Headlines Trade negotiations with China resume on Monday with a meeting in London. The U.S. side will include the Treasury Secretary, Commerce Secretary, and the Trade Representative Ambassador, with China represented by its Vice Premier. This group was previously reported to have reached an impasse, but talks were advanced by a phone call between President Trump and Xi Jingping last week. Trump indicated that the phone call included Xi’s assurance that imports of rare earth materials and magnets could continue. It was another record week for the cattle market last week, with futures working up toward fresh all-time highs in the cash trade again. Monday opens up the delivery period for June live cattle futures, which still have the rest of the month to converge with the price. Cash deals jumped by as much as $10…