Retailers Howl as U.S. Trade Agency Locks in 15% Tariffs on September 1

WASHINGTON/DECATUR, Ill. (Reuters) - The Trump administration on Wednesday made official its extra 5% tariff on $300 billion in Chinese imports and set collection dates of Sept. 1 and Dec. 15, prompting hundreds of U.S. retail, footwear, toy and technology companies to warn of price hikes.