Trump twittered to increase taxes to 15% on $300B and remaining ... etc. This is in response to Chinese PRC increase tariffs on American products.
Frankly, the import of American goods to China is far lesser than China exports. Any increase in tariffs now is like whipping a dead horse after several rounds of retaliations. In all it's purpose, China latest response is for local consumption mainly FACE and probably upholding President Xi power base. Unfortunately, President Trump aren't the type who can lose face either. Furthermore this help America interests and his voting base to provide reason to further isolate China from America Economy to prevent a China near term rise to challenge America power presumption.
( LKY has said before as long China has peaceful development provided The PRC Chinese holds their horses they would reach their Super Power status. What a wise word said so...