The Department of Commerce has made a preliminary finding that tires from the Socialist Republic of Vietnam are likely being sold in the U.S. for less than their fair value. This investigation covers sales made between October 2019 and March 2020. The Department plans to require a cash deposit from importers to cover the difference between normal value and the U.S. price. The final decision on this matter is currently postponed, and the rules on deposits will remain in place until further notice.
Simple Explanation
The Department of Commerce thinks tires from Vietnam are being sold in America for super cheap prices that aren't fair. They are giving it some time to make a final decision and are asking tire sellers to set aside some money just in case they need to pay more later.