In a statement on June 18, 2018, U.S. President Donald Trump directed the U.S. Trade Representative (USTR) to identify $200 Billion worth of Chinese goods for additional tariffs at a rate of 10%.
The additional tariffs will go into effect once the legal process is complete.
The White House press release may be found here:
https://www.whitehouse.gov/briefings-statements/statement-president-regarding-trade-china-2/