Photo by: Andy Wong FILE - In this Thursday, June 14, 2018, file photo, a Chinese national flag at Tiananmen Square flutters against the capital city tallest skyscraper China Zun Tower under construction at the Central Business District in Beijing. China has threatened "comprehensive measures" in response to U.S. President Donald Trump's new tariff hike, raising the possibility Beijing might target operations of American companies. (AP Photo/Andy Wong, File)