The newest countries to be affected with Trump's Aug. 1 tariffs include Malaysia, Kazakhstan, South Africa, Laos and Myanmar. Trump shared letters that were sent to the nations, notifying them of levies ranging from 25% to 40%. They come on top of 25% tariffs imposed on Japan and South Korea.

The stock market returned on Monday with a bit of a hangover after ending the holiday-shortened week at record levels. The Dow Jones Industrial Average was down 71 points, or 0.2% at the market open.