China did not back down Monday in a back-and-forth with the U.S. over trade, calling for U.S. President Donald Trump to withdraw his latest threat of a 100% tariff and other export control measures announced over the weekend. In the latest escalation of the trade war between the two nations, Trump issued the tariff threat on all Chinese imports into the U.S. after China placed stricter restrictions Thursday on rare earths, a vital resource used in electronics. MORE: https://www.wthr.com/article/syndication/associatedpress/china-shows-no-sign-of-backing-down-while-issuing-call-for-us-to-withdraw-tariff-threat/616-b6d1fb1d-9ba1-49ad-b18e-50d5fa51df2f