The US plans to add more tariffs to Chinese imports starting September 1st. President Donald Trump made the announcement on Twitter, stating the nation would impose a 10 percent tariff on $300 billion worth of Chinese goods, in addition to an existing 25 percent tariff on $250 billion of imported items. He said the tariff would be enforced after China didn't meet a promise to buy more American agricultural goods. He also claimed China, despite saying it would, failed to stop fentanyl sales to the US.