President Trump plans to withdraw from a 144-year-old postal treaty that has allowed Chinese companies to ship small packages to the United States at a steeply discounted rate, undercutting American competitors and flooding the market with cheap consumer goods.
U.S. stocks are vulnerable when China stocks fall hard
https://www.cnbc.com/2018/10/18/us-stocks-are-vulnerable-when-china-stocks-fall-hard.html