https://www.nytimes.com/2019/05/09/us/politics/china-trade-tariffs.html
Just before a scheduled round of trade negotiations began on Friday, President Trump announced that he was still going to levy additional tariffs on Chinese imports valued at approximately $250 billion. President Trump claimed that these tariffs would bring billions of dollars back to US manufacturers, but the main focus seems to be inflicting pain on China, as opposed to bringing prosperity to the US. China and the US have not been able to reach an agreement that would minimize or end outright the "trade war" between the two, which stems from the Trump Administration's belief that China is not doing all it can to protect American investments and intellectual property in China, as well as the belief that a large trade deficit with China is inherently bad.
The Trump Administration's use of tariffs as a negotiating tool is inelegant, but effective. Unilateral tariffs immediately affect the Chinese export industry, whose products become less competitive in US markets. While this inflicts pain on Chinese exports, whose largest market is the US, it also affects US consumers, who have to pay higher costs for consumer goods. Additionally, because China retaliates with target tariffs (on politically-relevant goods like Kentucky Bourbon and soybeans from the Heartland), US exporters are equally hurt by the trade war. The only immediate winner is the US, who collects revenue from the applied tariffs; however, long-term, US domestic industry should improve, as they will become more competitive when Chinese imports are more expensive. Slowly, we are starting to see this happen: Dan DiMicco, the chairman of a lobby group "Coalition for a Prosperous America," explained that American manufacturing is already experiencing gains in their domestic market shares.