美国计划对部分旅游和商务签证要求1.5万美元保证金

Core Points - The U.S. plans to require a bond of up to $15,000 for certain tourist and business visa holders starting August 20 [1] - This measure aims to combat visa overstays by tourists [1] - A travel ban was issued by Trump in June, prohibiting citizens from 12 countries from entering the U.S. under the guise of national security [1]