A Chinese and U.S. flag at a booth during the first China International Import Expo in Shanghai, November 6, 2018. Johannes Eisele | AFP | Getty Images American businesses are bearing most of the cost burden from the elevated tariffs imposed at the height of the U.S.-China trade war, said Moody's Investors Service. The ratings agency said in a Monday report that U.S. importers absorbed more than 90% of additional costs resulting from the 20% U.S. tariff on Chinese goods. That means U.S. importers pay around 18.5% more in price for a Chinese product subject to that 20% tariff rate,…