U.S. dairy exporters are losing money as they try to maintain their hard-won footholds in the Chinese market amid the rising tariffs resulting from President Donald Trump’s trade war. Some U.S. exporters – sellers of relatively low-cost nonfat dry milk powder – have already had to give up, but many who depend on China to buy whey, cheese and other pricier products are hanging on for now, says U.S. Dairy Export Council (USDEC) President and CEO Tom Vilsack.It’s a tough situation that’s only degrading as U.S. companies lose ground to competitors in Australia, Europe and New Zealand.