The Friday announcement from the president came after a week of ups and downs, including Moody's downgrading the nation's credit rating.

Stocks start lower as investors worry about tariffs and Treasury yields as President Donald Trump's tax bill continues to travel through Congress.

While the Japanese firm didn't explicitly call out tariffs as the reason, the fact that the increases were only coming for the US market was telling.This followed on the heels of perhaps the largest retailer to issue a price increase warning: Walmart.