Soybean prices in Chicago have dropped due to import tariffs announced by the White House, leading China to retaliate with a 34% tariff on US imports. The dip in soybean oil prices is also attributed to a decrease in crude oil prices following OPEC+'s decision to increase production quotas. Wheat prices have also seen a decline, but corn prices have slightly rebounded due to a tariff exemption granted to Mexico, offering a positive outlook for corn exporters.